Treehouse: Library of Courses on HTML, CSS, PHP, JS & Python Web Development. Start Learning Now!

Welcome to the Treehouse Library

This is a sample catalog of all the courses we offer. Browse by topic or difficulty. Sign up today and get access to our entire library. Treehouse students get access to workshops, bonus content, conferences, and more.

Ready to start learning?

Treehouse offers a 7 day free trial for new students. Get access to 1000s of hours of content. Learn to code, land your dream job.

Start Your Free Trial

Newest
- Newest
- Oldest
- Alphabetical
- Difficulty
Content type
- All Types
- Course
- Workshop
- Practice
- Conference
- Bonus Series
All Topics

8 min
Workshop
Full-Stack JavaScript Techdegree Portfolio Overview

Here at Treehouse, we have many Techdegrees to get you job-ready no matter your skill level! The Full-Stack JavaScript Techdegree is one of the most popular. Come take a look at all the professional-quality projects you'll build in this Techdegree!

Start your free trial today! (https://trhou.se/3I1UNT3)

Projects Random Quote Generator (https://teamtreehouse.com/library/introducing-the-random-quote-generator-2) Data Pagination and Filtering (https://teamtreehouse.com/library/introducing-the-data-pagination-and-filtering-project-2) Interactive Form (https://teamtreehouse.com/library/introducing-the-interactive-form-project-2) OOP Game Show App (https://teamtreehouse.com/library/introducing-the-oop-game-show-app-2) Public API Requests (https://teamtreehouse.com/library/introducing-the-api-requests-project-2) Static Node.js and Express Site (https://teamtreehouse.com/library/introducing-the-static-nodejs-and-express-site-project-2) React Gallery App (https://teamtreehouse.com/library/introducing-the-react-gallery-app-project-2) SQL Library Manager (https://teamtreehouse.com/library/introducing-the-sql-library-manager-project-2) REST API (https://teamtreehouse.com/library/introducing-the-rest-api-project-2) Full Stack App with React and a REST API (https://teamtreehouse.com/library/introducing-the-full-stack-app-with-react-and-a-rest-api-project-2)

Viewed
- JavaScript
- Beginner
15 min
Workshop
Gulpfile Setup

Ever wondered how other developers minify their code and add tons of enhancements to their projects or apps? I can tell you a secret; they don’t do it themselves! They use something like gulp to automate that stuff for them. Follow along as I show you how I build out a basic gulpfile from scratch using gulpjs. Never heard of gulp before? Not to worry, I’ll take you through the process step-by-step in this beginner guide to setting up a gulpfile. With only a basic knowledge of JavaScript, npm, and Node.js, you’ll be able to follow along comfortably and start automating your workflow like a seasoned developer. If videos aren't your thing or want to take your time to work at your own pace, check out our blog post (https://blog.teamtreehouse.com/gulpfile-setup) that mimics this video.

Viewed
- JavaScript
- Intermediate
10 min
Workshop
JavaScript Tip Calculator Overview

In this quick overview geared for advanced beginners, you’ll learn my thought process behind building a tip calculator with vanilla JavaScript. By the end of this video, you should have a decent understanding of what it takes to build this out and try it for yourself. Though this isn’t meant to be a step-by-step guide, you should be able to tackle this project on your own with a solid understanding of JavaScript basics as well as HTML and CSS. If any of the topics discussed are confusing to you, I suggest taking a look at the courses in the Teacher's Notes.

Viewed
- JavaScript
- Intermediate
- 1
- 2
- 3
2 hours
Course
Build a Chatbot with Watson APIs

IBM has created an AI platform named Watson that gives businesses and developers access to powerful tools for text and speech analysis, computer vision, and more. Watson APIs consist of a suite of services used to process or analyze data to answer questions and make decisions. This course will show you how to build a chatbot with Node.js and the Conversation and Discovery services from Watson. You'll also learn how to setup your bot on the IBM Cloud platform.
- APIs
- Intermediate
11 min
Practice
Practice Setting Up a Python Project

Practice setting up a Python project locally and on GitHub.

Viewed
- Python
- Intermediate
9 min
Practice
Practice Error Handling

Practice your error handling skills using try/except blocks.

Viewed
- Python
- Beginner
11 min
Workshop
Computer Fundamentals (Windows)

Learn about your computer's file structure, zip files, and downloaded files to prepare you for your learning journey here at Treehouse.

Viewed
- Digital Literacy
- Beginner
11 min
Workshop
Computer Fundamentals (Mac)

Learn about your computer's file structure, zip files, and downloaded files to prepare you for your learning journey here at Treehouse.

Viewed
- Digital Literacy
- Beginner
13 min
Practice
Practice Cleaning Data

Practice accessing data and cleaning it for use in other functions or programs.

Viewed
- Python
- Beginner
7 min
Practice
Practice Emulating Built-ins

Practice emulating Python's built-in methods dunder str, dunder eq, and dunder iter.

Viewed
- Python
- Intermediate
8 min
Practice
Practice OOP Vocabulary

Test your knowledge of OOP vocabulary with this practice session.

Viewed
- Python
- Intermediate
- 1
- 2
- 3
- 4
68 min
Course
Node.js Basics

In this course we will create two command line applications using the popular server-side JavaScript platform Node.js. We'll be creating an application to retrieve a student's Treehouse profile information and be working with a dictionary API to retrieve definitions of a given word.
- JavaScript
- Intermediate
17 min
Workshop
Dunder Main

In this workshop, we’ll talk about using a recommended Python best practice, dunder main to control the execution of our code.

Viewed
- Python
- Beginner
- 1
- 2
- 3
76 min
Course
Intro to Seaborn

The Seaborn module is a Python visualization library based on Matplotlib. It provides a higher-level, more convenient way to create common statistical plots and is well-suited for labeling and presenting statistical graphics. This course will help you get started with Seaborn by walking through the structure of its library, showing how to create key charts in Seaborn, and comparing the results with equivalent plots created with Matplotlib.
- Python
- Intermediate
33 min
Workshop
Data from APIs

Use Python to gather data from an API and save it to a CSV file.

Viewed
- Python
- Intermediate
- 1
- 2
44 min
Course
npm Basics

npm is a command line tool to help you manage Node.js modules, and this course will get you up and running with npm.
- JavaScript
- Intermediate
- 1
- 2
79 min
Course
Preparing Data for Analysis

Learn how to clean and prep data for analysis using spreadsheet tools and Python's Pandas.
- Data Analysis
- Intermediate
42 min
Workshop
Relational Databases With SQLAlchemy

Learn how to interact with multiple tables through relationships using Python's SQLALchemy.

Viewed
- Python
- Intermediate
- 1
- 2
- 3
78 min
Course
UX Design Patterns

If you’re a frequent user of websites and mobile applications, you’re already familiar with design patterns, whether you’re aware of it or not. Design patterns are visual strategies for solving common usability problems. Design patterns keep cognitive load to a minimum by making interfaces feel intuitive. When I say cognitive load, I mean the mental effort involved in solving a problem or making a decision.
- Design
- Beginner
- 1
- 2
- 3
2 hours
Course
JavaScript and the DOM

JavaScript lets you create interactive web pages which can respond to a user's actions. In this course, you'll learn how to bring web pages to life using the power of JavaScript.
- JavaScript
- Beginner
- 1
- 2
66 min
Course
Interacting with the DOM

Along with selecting DOM elements in JavaScript we can also write code that gives elements behavior. In this course we will first explore how to watch for interaction and respond using the method addEventListener. We'll learn about different types of events and how we can use the relationships between elements to write more powerful code.
- JavaScript
- Intermediate
6 hours
Bonus Series
Treehouse Guest Speaker Series

Treehouse Guest Speaker Series is an ongoing live event hosted by Treehouse staff. In this series experts working in the field offer advice on how to transition into tech. Want advice on how to nail a technical interview? Need to stand out to tech recruiters? Have the desire to improve your practical skills? This is the series for you!

Viewed
- Computer Science
42 min
Workshop
Data Visualization with Google Sheets

Did you know that Google Sheets is a great tool to tell stories with your data? This workshop will guide you through five different ways to visualize your data with Google Sheets and ultimately improve the story you're trying to tell to stakeholders!

Viewed
- Data Analysis
- Beginner
30 min
Workshop
Automate Your Work with Zapier

Zapier automates repetitive, easily replicated tasks in your day by connecting the tools and software you use every day. Learn the essential features of Zapier, what automation is and how it can make your workflows even more powerful. You'll even get to create an automated workflow to help make the most of your learning time.

Viewed
- Dev Tools
- Beginner
16 min
Workshop
Presenting An Analysis

Learn the fundamentals for creating a presentation to highlight your analysis for stakeholders.

Viewed
- Data Analysis
- Beginner
14 hours
Conference
Treehouse Festival June 2021

Treehouse Festival is an online conference designed for Treehouse students and all aspiring developers and designers. The presentations will empower those that attend with skills and a network to transition to a tech career or level-up in their current roles. Sessions include “Designing with a Developer Mindset,” “Computer Science, Emulation, and the NES,” “Interview with a Treehouse Grad”, and more!

Viewed
- 12 topics
24 min
Practice
Practice Data Visualization

Students will practice converting raw data into an informative visualization.

Viewed
- Design
- Beginner
26 min
Workshop
Intermediate Spreadsheets

Are you ready to learn more about working with spreadsheets? This workshop will explore concepts such as conditional formatting, lookup functions, pivot tables, and error checking using Google Sheets. Expand your toolset as a data analyst and take your spreadsheet game to the next level!

Viewed
- Data Analysis
- Intermediate
95 min
Workshop
Python Sets

Dive into the basics of Python Sets! A set is an unordered collection of unique elements without duplicates. Elements are identified by membership rather than position. This workshop will introduce you to how to create and manipulate sets as well as how to perform common set operations.

Viewed
- Python
- Beginner
6 min
Practice
Practice the CSS Box Model

In this practice session, we’ll be working with the CSS Box Model.

Viewed
- CSS
- Beginner
10 min
Practice
Practice Enhancing Design with CSS

In this practice session, we’ll be practicing enhancing a web layout with CSS.

Viewed
- CSS
- Beginner
8 min
Practice
Practice CSS Media Queries

In this practice session, we’ll be working with CSS Media Queries.

Viewed
- CSS
- Beginner
8 min
Practice
Practice CSS Length Units

In this practice session, we’ll be working with CSS Length Units.

Viewed
- CSS
- Beginner
- 1
- 2
- 3
- 4
76 min
Course
Data Visualization Foundations

What is data visualization? A simple answer might be something like the graphic representation of data. But to get a better understanding of what practitioners of data visualization do, let’s start with the term data. By data, I mean raw, unorganized facts and numbers. Practitioners of data visualization take raw, hard to grasp data and turn that data into information by providing context and a purpose.
- Design
- Beginner
45 min
Workshop
Combining Data for Analysis

In this workshop, students are introduced to common methods used to combine multiple datasets, specifically merge and concatenation. Students will use Pandas, a powerful data analysis tool built on top of Python. After completion, students are equipped to combine datasets for further analysis and manipulation.

Viewed
- Data Analysis
- Beginner
- 1
40 min
Course
Important Skills for Professional Success

No matter what job you're in right now or career you hope to have, improving your "soft skills" can help you become a better worker, better team member, and a better person. Embracing a work lifestyle involving communication and feedback, collaboration, and working together to improve things can only lead to positive results.
- Courses Plus
- 21st Century Skills
- Beginner
- 1
59 min
Course
Careers in the Tech Industry

Through a series of interviews with Treehouse teachers and more, we explore the current state of the tech industry, including how to get started as a web designer, developer, or app developer.
- Courses Plus
- Business
- Beginner
32 min
Workshop
Introducing Coda

Get started with the basics of Coda! Coda reinvented how we create, share, and work with documents by combining the ease and familiarity of the document and spreadsheet software we're used to with the power, ease, and accessibility of apps. You'll learn how Coda can empower you to make documents that are as powerful as apps, then create and publish a simple Coda doc from scratch.

Viewed
- Dev Tools
- Beginner
24 min
Workshop
Learning with Coda

In this workshop, you'll learn how to use Coda as a tool for learning, note-taking, time management, and more by customizing a workbook doc we've built in Coda to best fit your learning needs.

Viewed
- Dev Tools
- Beginner
19 min
Workshop
String Manipulation with JavaScript

Learn and practice string manipulation methods that will allow you more control over data in your JavaScript programs.

Viewed
- HTML
- Beginner
20 min
Workshop
Introduction to New Relic

Learn what New Relic is and how its platform can support you in your learning and professional journey by building better and more reliable websites and applications.

Viewed
- Dev Tools
- Beginner
3 min
Workshop
Why We Exist: Our Mission

For this portion of Orientation, we want to share a little bit about the mission of Treehouse. We’ll go in-depth around why this is our mission, how it relates to challenges in our industry, and what this has to do with Ubora!

Viewed
- Treehouse Onboarding
- Beginner
3 hours
Bonus Series
Treehouse Live

Enjoy our full collection of Treehouse Live sessions with our amazing Treehouse Instructors! Follow along as they teach live and take questions from students like you.

Viewed
- Learning Resources
47 min
Workshop
How To Use Treehouse

This workshop will introduce you to the Treehouse site and help you get the most out of your Treehouse learning experience.

Viewed
- Treehouse Onboarding
- Beginner
20 min
Workshop
Hello Computer Science

In this workshop, students are introduced to fundamental Computer Science (CS) concepts. This workshop unpacks the history of computer science, defines key terms, and identifies common elements across multiple disciplines.

Viewed
- Computer Science
- Beginner
21 min
Workshop
Hello UX

User Experience Design, commonly called UX Design, encompasses all aspects of a user's interaction with a company, its services, and its products. UX designers prioritize the needs of users and create solutions through empathy. So when UX designers help design a product or service for a company, we’re constantly asking ourselves: who are that company’s users? What do the users want to achieve? What obstacles stand in their way? And how can we minimize those obstacles and make the experience of our users a positive one?

Viewed
- Design
- Beginner
33 min
Workshop
Hello Front-End Web Development (FEWD)

Front-end web developers write the code that turns a static mockup into an interactive web page. In this workshop, we’ll take a look at the types of code front-end developers write, and even try it out ourselves. But before we do that, let’s take a closer look at the term front-end. Front-end developers are sometimes referred to as client-side developers, since everything we code is directly viewable by the client–in other words, the visitor to our website or app.

Viewed
- HTML
- Beginner
18 min
Workshop
Hello Full Stack JavaScript

This workshop provides an introduction to Full Stack JavaScript. Learn about the difference between front and back-end programming. Start writing code in JavaScript and making changes to web pages.

Viewed
- JavaScript
- Beginner
33 min
Workshop
Hello Python

An introduction to the Python programming language. Learn about what backend development is and how Python differs from other programming languages. Jump into writing code and creating your first small program.

Viewed
- Python
- Beginner
- 1
30 min
Course
Technical Interview Prep: Python Basics

Test your basic Python knowledge with a few code challenges. These challenges are similar to those you might encounter in a technical interview.
- Python
- Beginner
- 1
22 min
Course
Basic Statistics for Data Analysis

Basic statistics concepts learned through traditional schools may have been forgotten or not utilized for a long time. This course is to remind students how to calculate basic statistics, solidify understanding of the terminology, and determine which graphs might be most useful in displaying data.
- Data Analysis
- Beginner
33 min
Workshop
Analyzing Books with Pandas

Walkthrough an analysis on books using Python's Pandas.

Viewed
- Python
- Intermediate
2 hours
Bonus Series
Hour With a Tech Recruiter

Ever wonder what Tech Recruiters are looking for when applying to jobs? Welcome to Hour with a Tech Recruiter! In this live event, Treehouse Founder and CEO Ryan Carson will facilitate a conversation with a real world Tech Recruiter. They'll discuss practical tips for folks looking to stand out to recruiters and land a dream job in tech.

Viewed
- Equity, Diversity, and Inclusion (EDI)
- 1
- 2
2 hours
Course
Flask with SQLAlchemy Basics

Learn how to use the popular Python framework for creating websites and web applications, Flask. Then upgrade your website with a database connection using SQLAlchemy.
- Python
- Intermediate
- 1
- 2
3 hours
Course
SQLAlchemy Basics

Creating a SQL database including model creation and CRUD using SQLAlchemy.
- Python
- Intermediate
12 hours
Conference
Treehouse Festival December 2020

Treehouse Festival is an online conference designed for Treehouse students and all aspiring developers and designers. The presentations will empower those that attend with skills and a network to transition to a tech career or level-up in their current roles. Sessions include “Designing with a Developer Mindset,” “Computer Science, Emulation, and the NES,” “Interview with a Treehouse Grad”, and more!

Viewed
- 9 topics
- 1
38 min
Course
Mobile-First CSS Layout

In this course, you'll get hands-on practice using CSS layout techniques such as a CSS Reset with Normalize, a layout wrapper, a sticky footer, and centered content with a full-width header. In addition, you'll learn principles that will help you approach your next project with a mobile-first mindset.
- CSS
- Beginner
10 min
Workshop
Using Local Storage With JavaScript

Local Storage is part of the Web Storage API, and allows you, as a developer, to store data in a user's browser. Let's learn how to use Local Storage and the Web API, then create a fun project to see it in action.

Viewed
- JavaScript
- Intermediate
- 1
- 2
- 3
- 4
2 hours
Course
Enhancing Design with CSS

In this course, we're going to learn CSS properties for enhancing visual design. We’ll cover various properties for styling text, including loading web fonts from external resources. We’ll learn techniques for turning our CSS boxes into more than just rectangles. And finally, we’ll learn some really cool visual effects using CSS filters and gradients.
- CSS
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
CSS Layout

In this course, we're going to learn techniques for better control over our CSS layouts. We’ll cover how the CSS Box Model impacts the presentation of each HTML element, learn to control the position of each element onscreen, and even begin to adjust our layouts for different screen sizes and environments.
- CSS
- Beginner
- 1
- 2
- 3
- 4
3 hours
Course
CSS Basics

In this course, we're going to learn the basics of CSS, one of the core technologies for designing and building websites and applications. No matter what kind of website or web application you want to build, you'll have to use CSS. If you haven't written much CSS, or even if you’ve never written CSS at all, don’t worry. That's what this course is for. We’ll start with basic CSS concepts, then gradually progress to more advanced topics and lessons.
- CSS
- Beginner
- 1
41 min
Course
How to Have 1:1's

Learn WHY one-on-ones are the most important meeting on your calendar for you and your manager as well as HOW we recommend preparing for and best practices for one-on-ones.
- 21st Century Skills
- Beginner
31 min
Workshop
SVG Workflow and Tools

Learn useful tools and techniques for optimizing, organizing and structuring your SVG files. Then learn sizing and scaling your SVG with inline attributes

Viewed
- HTML
- Intermediate
11 min
Practice
Practice Hooks in React

Practice React's built-in useContext and useState Hooks to update an app with user authentication.

Viewed
- JavaScript
- Intermediate
- 1
- 2
72 min
Course
Collaborating with Developers

Designers will learn how to involve developers throughout the design process, from conceptual brainstorming to implementation in code.
- Design
- Intermediate
- 1
50 min
Course
Technical Interviewing

This seminar will cover a range of what you might experience in a technical interview since they vary by company. We’ll discuss best practices for whiteboarding and other alternatives such as pair programming or portfolio review as well as useful tools to help you practice.
- 21st Century Skills
- Beginner
- 1
- 2
- 3
2 hours
Course
Basic Object-Oriented Python

Learn the powerful object-oriented method of designing and laying out code.
- Python
- Intermediate
16 min
Workshop
Structuring Your JavaScript Code

Improve the quality of your code by applying the principles of narrative flow, iterative coding, KISS, DRY, and JavaScript Best Practices.

Viewed
- JavaScript
- Beginner
119 min
Bonus Series
How to Land Your Dream Job

How to Land Your Dream Job is a interview series hosted by Treehouse Founder and CEO Ryan Carson. In this series Ryan talks with guests about how they successfully transitioned to tech as a career.

Viewed
- 21st Century Skills
- 1
- 2
- 3
- 4
- 5
75 min
Course
Intro to Design Thinking

Learn the user-centered methods and mindsets that entire businesses are using to improve their product experiences. Throughout this course, we’ll go over how to find the voice of our user, the importance of that voice, and how to create a better experience for our user.
- Design
- Beginner
- 1
25 min
Course
Basic Math for Data Analysis

Basic math concepts learned through traditional schools may have been forgotten or not utilized for a long time. This workshop is to remind students how to calculate basic statistics and refresh their memory on terminology.
- Python
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
Ethical Design

With all the power that technology yields, it comes with tremendous responsibility. This course will introduce Ethical Design, which considers the moral implication of one's work on others. Specifically, we'll focus on tech at the intersection of development, design, and business. We'll reflect on how tricky interfaces and dirty data practices have negative consequences on society. Ethical frameworks and tools will be shared so you can evaluate and align your actions with your values. Techniques for effective advocacy will enable you to nurture human-centered decisions in your organization. This course is for everyone who works in tech, regardless of their role.
- 21st Century Skills
- Beginner
49 min
Workshop
Responsive Design

In this workshop, we’ll be discussing responsive design, where content renders well and remains usable on a variety of devices and viewport sizes. On previous projects, you may have been asked to design with a specific screen in mind, whether a desktop, tablet, or mobile device. And sometimes, especially when designing for a mobile app, this approach can be appropriate. For websites, however, it’s usually best to work with a single design and consider how that design transitions from screen to screen.

Viewed
- Design
- Beginner
30 min
Workshop
Sequelize Model Validation

When working with an ORM library like Sequelize, you can take advantage of its built-in data validation and constraint capabilities. In this workshop, you'll continue to use Sequelize to write robust server-side data validation for a REST API developed with Express. The API allows you to create a user account and retrieve a list of user accounts.

Viewed
- JavaScript
- Beginner
13 min
Workshop
Treehouse Student Orientation

Welcome to Treehouse! This short student orientation helps you get started on your Treehouse learning journey, focusing on learning, and accomplish your learning goals.

Viewed
- Learning Resources
- Beginner
- 1
- 2
91 min
Course
Accessibility For Web Developers

Accessibility is a process that specifically considers the needs of people with disabilities. In this course, you’ll learn about the standards in place to guide developers in creating experiences that are accessible to all users as well as tools and techniques to ensure your projects are up to those standards.
- HTML
- Beginner
- 1
46 min
Course
Intro to Gender & Sexuality

In this seminar, we'll do an overview of gender and sexuality. We will breakdown these terms, discuss its importance, and how to be inclusive and equitable to these identities.
- Equity, Diversity, and Inclusion (EDI)
- Beginner
- 1
- 2
51 min
Course
REST API Validation with Express

Explore how to validate data on the server using a REST API developed with Node.js and Express. The API will allow you to create a user account and retrieve a list of user accounts.
- JavaScript
- Intermediate
- 1
- 2
- 3
- 4
92 min
Course
Data Relationships with SQL and Sequelize

As you follow along in this course, you'll define data relationships for a simple Node application that creates and retrieves movie data. You'll define data relationships in Sequelize models, and create related data (like Movie and Person records) using those models. Then you'll retrieve related data with Sequelize queries.
- JavaScript
- Intermediate
11 min
Practice
Practice Creating UX Content

Practice creating UX content. You'll be given two companies with differing brand personalities, and you'll create UX content for their product pages.

Viewed
- Design
- Beginner
- 1
- 2
- 3
- 4
4 hours
Course
A Social Network with Flask

It's time to dig in and build something big. In this course, we're going to take the tools we've learned, Flask, Peewee, and Python itself, and build a small social network. We'll have user registration, user authentication, strongly hashed passwords, form validation, and more.
- Python
- Intermediate
12 hours
Conference
Treehouse Festival July 2020

Treehouse Festival 2020

Viewed
- 8 topics
56 min
Workshop
Structuring Your Code

Improve your code structure by applying narrative flow, iterative coding, KISS, and DRY methods.

Viewed
- Python
- Beginner
37 min
Practice
Practice Using A Design System

For this practice session, we’ll be using Adobe XD to wireframe a homepage for votingrights.gov, an imaginary website for the United States federal government that informs citizens about their right to vote. We’ll start with a problem, a set of research, and some design explorations in the form of rough sketches. We’ll then use the United States Web Design System to ensure the look and behavior of our design are consistent with other federal government sites.

Viewed
- Design
- Beginner
- 1
- 2
35 min
Course
User Onboarding

User onboarding optimization has a huge impact on user retention, allowing users to more quickly engage with a product and understand its value. We'll take a look at several user onboarding patterns.
- Design
- Beginner
70 min
Workshop
React Hooks

Get started with React Hooks, special functions that let you use state, context, and perform side effects in function components.

Viewed
- JavaScript
- Intermediate
9 min
Practice
Practice Error Handling in Express

In this practice session, you'll get to sharpen your error handling skills in Express. Handling errors well helps users understand what's going on with your app when something goes wrong.

Viewed
- JavaScript
- Intermediate
25 min
Workshop
Designing Dynamic UI States

When designing views in a website or app, it's common to think about the ideal state first. Content perfectly fills the UI, graphs are visualizing data, the user has familiarity with the tool, and the full functionality of the product is apparent. However, there are many more states to anticipate, from onboarding new users to helping more seasoned users discover new functionalities and manage copious amounts of data. In this workshop, you'll learn how to design UI for dynamic app states.

Viewed
- Design
- Beginner
7 min
Practice
Practice Sketching

For this practice session, you’ll be creating eight rough sketches for the primary screen of a sketching application. This app gives users the ability to make quick, shareable, black-and-white sketches using their finger on a touchscreen.

Viewed
- Design
- Beginner
11 min
Practice
Practice Wireframing

For this practice session, you’ll be creating a digital wireframe in Adobe XD for the primary screen of a sketching application. This app gives users the ability to make quick, shareable, black-and-white sketches using their finger on a touchscreen.

Viewed
- Design
- Beginner
- 1
- 2
90 min
Course
Accessibility For UX Designers

Accessible design is a design process that specifically considers the needs of people with disabilities. In this course, you’ll learn about the standards in place to guide designers in creating experiences that are accessible to all users as well as techniques to help bring your projects up to those standards.
- Design
- Beginner
15 min
Practice
Practice JavaScript Loops

Build up your JavaScript skills by practicing the basics of loops.

Viewed
- JavaScript
- Beginner
- 1
- 2
67 min
Course
JavaScript Objects

Objects are an essential part of JavaScript; they provide a flexible way to keep track of data by associating a name with a particular value. In this course, you'll learn the basics of JavaScript objects as a data structure (using objects to store key/value pairs).
- JavaScript
- Beginner
- 1
- 2
- 3
2 hours
Course
JavaScript Arrays

Arrays provide a way to store multiple pieces of information. An array is a list of values: numbers, strings, boolean values, or even other arrays. In this course, you'll learn the basics of using arrays as data structures.
- JavaScript
- Beginner
- 1
- 2
76 min
Course
JavaScript Loops

Loops are a way of repeating code -- they're handy for repetitive tasks. Loops are frequently used for actions that need to run a particular number of times or until a certain condition is true.
- JavaScript
- Beginner
- 1
11 min
Course
Imposter Syndrome

Everyone has probably experienced Imposter Syndrome. We may not know what it is but we have felt it at some point. In these videos learn about what Imposter Syndrome is and tips to combat it.
- 21st Century Skills
- Beginner
5 min
Practice
Practice Creating a Sitemap

Practice creating a sitemap for an elementary school called Northeast Elementary. Use research and a persona to determine what features and pages the school will need on its website then organize and diagram them into a sitemap.

Viewed
- Design
- Beginner
- 1
- 2
- 3
- 4
113 min
Course
Build a REST API with Laravel

Build a REST API using one of the most popular PHP frameworks, Laravel. In this course you'll learn how to implement CRUD operations in a Laravel REST API using the MVC design pattern.
- PHP
- Intermediate
- 1
29 min
Course
How to Give and Receive Feedback

Learn why feedback is useful. You'll explore a simple process for providing feedback (both positive and constructive) in a way that will be well-received and motivate the right behavior. You'll also learn tips for receiving feedback effectively and putting it into action.
- 21st Century Skills
- Beginner
- 1
- 2
- 3
- 4
- 5
78 min
Course
Laravel Basics

This course will show you how to build the Treehouse course catalog using Laravel, one of the most popular PHP frameworks. You could easily use this project to create your own basic Laravel application using the MVC design pattern.
- PHP
- Intermediate
- 1
- 2
64 min
Course
Designing Interactions

Learn the principles of Interaction Design, including the five dimensions, interaction models, and cognitive psychology. Apply those principles by learning how to design interactions in a design program.
- Design
- Beginner
17 min
Workshop
Presenting Design Ideas

Learn how to effectively present your design process to stakeholders so you can communicate a vision. Define the agenda, set the project goals, share your research, compare iterations, navigate feedback, and create a path for next steps.

Viewed
- Design
- Beginner
18 min
Workshop
Designing for User Roles

Delve into the nuances of building a product for multiple audiences. Learn how user roles are defined and used. Recognize the importance of providing various permission levels, learn best practices, and analyze how B2B (business-to-business) products serve many types of users.

Viewed
- Design
- Beginner
11 min
Workshop
Introducing Google Slides

Walkthrough Google Slides to understand the tools available to create presentations.

Viewed
- Design
- Beginner
- 1
- 2
39 min
Course
Getting Started With Human Interface Guidelines

Learn how to work with Apple’s Human Interface Guidelines documentation. Learn to apply Human Interface Guidelines principles when designing iOS applications.
- Design
- Beginner
- 1
- 2
46 min
Course
Getting Started With Material Design

Learn how to work with Google’s Material Design documentation. Learn to apply Material Design principles when designing applications for the Android platform.
- Design
- Beginner
- 1
- 2
- 3
- 4
76 min
Course
Introduction to Design Systems

Learn how a scalable, repeatable design system leads to more efficient design. Learn the components of a design system, and how to work with existing documentation.
- Design
- Beginner
7 min
Practice
Practice Prototyping

Practice prototyping by connecting mockups in Adobe XD. Practice creating tap, time, and drag interactions.

Viewed
- Design
- Beginner
- 1
- 2
- 3
2 hours
Course
JavaScript Functions

JavaScript functions let you create reusable chunks of code. They make programming faster, easier, and less error-prone. They are also one of the essential concepts in JavaScript programming.
- JavaScript
- Beginner
- 1
- 2
83 min
Course
JavaScript Numbers

Numbers are everywhere in programming. You use them to track a player's score in a game, calculate the cost of shipping a product, or count the number of times a "Like" button gets clicked on a page. In this course, you'll learn how to use numbers for useful tasks in your JavaScript programs, including doing math, converting strings to numbers, generating random numbers, and more.
- JavaScript
- Beginner
- 1
- 2
- 3
- 4
3 hours
Course
JavaScript Basics

JavaScript is a programming language that drives the web: from front-end user interface design to server-side backend programming, you'll find JavaScript at every stage of a web site and web application. In this course, you'll learn the fundamental programming concepts and syntax of the JavaScript programming language.
- JavaScript
- Beginner
9 min
Practice
Practice Serving Static Files in Express

Practice the basics of serving static files in Express, a popular web application framework.

Viewed
- JavaScript
- Intermediate
8 min
Workshop
Understanding MVC

Learn the concepts behind the MVC -- Model, View, Controller -- programming pattern and how it can help you build web applications more efficiently and reliably.

Viewed
- Dev Tools
- Beginner
37 min
Workshop
Creating Mockups

Learn how mockups are used in the design process, and discover techniques for bringing them into your workflow. Practice transforming a set of wireframes into realistic depictions of the app by applying visual design styling and using Apple’s UI Kit for Adobe XD.

Viewed
- Design
- Beginner
- 1
- 2
- 3
- 4
- 5
3 hours
Course
Typography for Designers

Typography is one of the most important aspects of good design. In this course, you'll learn all you need to know about creating good typography as a UX Designer: how to choose a typeface; what to look for when laying out type, how to create typographic hierarchy, laying out type, and creating responsive typography.
- Design
- Beginner
6 min
Practice
Before and After: Typography

Improve the typography on an existing design.

Viewed
- Design
- Beginner
5 min
Practice
Before and After: Layout

Improve the layout of an existing mobile iOS app.

Viewed
- Design
- Beginner
7 min
Practice
Before and After: Color

Practice designing with color.

Viewed
- Design
- Beginner
11 min
Workshop
Solving Problems with UX Design

Product design is about solving problems. Learn how to identify problems, understand the difference between "needs" and "wants," and how to convert a problem statement into a hypothesis you can test by with user research.

Viewed
- Design
- Beginner
- 1
- 2
- 3
42 min
Course
Conducting User Interviews

Learn how to validate product ideas by identifying an audience, sourcing participants, conducting user interviews, and analyzing the results.
- Design
- Beginner
2 min
Practice
Practice Storyboarding

Storyboarding is a great way to visualize a persona’s interaction with your product. Building a storyboard helps to keep your design and solutions human-centered by using a story to empathize with your users. In this workshop, you'll practice this important skill by creating your own storyboard.

Viewed
- Design
- Beginner
10 min
Workshop
Creating an Affinity Diagram

Learn how to organize your research into an affinity diagram to uncover common patterns in a data and uncover opportunities for applying User Experience Design to user pain-points..

Viewed
- Design
- Beginner
10 min
Workshop
Creating User Personas

Learn how to focus your design work by developing users personas to help you represent and visualize the audience or audiences for you website, application or product.

Viewed
- Design
- Beginner
- 1
- 2
44 min
Course
Working with $_GET and $_POST in PHP

This course will show you how to work with PHP Superglobals such as $GET and $POST while using a security-conscious mindset. External inputs, like HTML forms, are considered a security vulnerability so you should always filter inputs and escape outputs. Using PHP Superglobals when using external inputs such as HTML forms, cookies, sessions, and web servers will give you a security-conscious mindset that you can apply to all of your projects.
- PHP
- Intermediate
- 2
- 3
2 hours
Course
Build a Basic PHP Website

This project will show you how to build a simple website using the PHP programming language. The web site, a media library, will let you organize and display your Books, Movies and Music. You could easily use this project to create a website that lets you organize and display any type of item: Branch Locations, Products, Services, Events, even Courses like we have here on Treehouse.
- PHP
- Beginner
10 min
Practice
Practice Using Data with Pug Templates

Practice the basics of passing data to Pug views and generating HTML dynamically within an Express application.

Viewed
- JavaScript
- Intermediate
37 min
Workshop
Using Sequelize ORM With Express

In this workshop, you will use the Sequelize ORM and Express to build a simple CRUD application that's connected to a SQL database.

Viewed
- JavaScript
- Intermediate
14 min
Practice
Practice Importing and Exporting Modules in Node.js

Practice the basics of importing and exporting modules in Node.js.

Viewed
- JavaScript
- Intermediate
3 min
Workshop
Collecting Design Inspiration

Collecting design inspiration is a fun way to get fresh ideas! It also helps you stay current with design trends and become aware of emerging design patterns. The goal is to collect designs that spark your own creative ideas.

Viewed
- Design
- Beginner
6 min
Workshop
Receiving UX Feedback by Example

See positive ways of handling different types of feedback on your designs, including constructive, negative and prescriptive feedback.

Viewed
- Design
- Beginner
18 min
Workshop
Debug Node Applications with Visual Studio Code

Debugging Node.js is not limited to using console.log. You can use more powerful and efficient tools like the built-in debugger in the Visual Studio Code editor.

Viewed
- JavaScript
- Intermediate
5 min
Workshop
Process Sass with Scout-App

Learn one of the quickest and easiest ways to set up and use Sass in your front-end web development projects, with Scout-App.

Viewed
- CSS
- Beginner
26 min
Workshop
Handling Feedback as a UX Designer

This workshop prepares new designers for handling feedback on their work in a diplomatic, effective, and professional manner.

Viewed
- Design
- Beginner
7 min
Workshop
Translating Pseudocode to JavaScript Code

Take pseudocode describing a function to calculate a GPA, and turn it into working JavaScript code.

Viewed
- JavaScript
- Beginner
28 min
Workshop
Plan Ahead with Pseudocode

Learn how to plan your programming projects before you open a text editor so you can discover logic errors before you start to share your ideas with your team.

Viewed
- JavaScript
- Beginner
- 1
- 2
- 3
100 min
Course
Using SQL ORMs with Node.js

In this course, you'll learn how to use the Sequelize ORM to leverage the power of SQL within your Node.js applications.
- JavaScript
- Intermediate
- 1
- 2
36 min
Course
Introducing Dictionaries

Another useful Python data structure is the dictionary. Learn how to write one and use one in your day to day Python code.
- Python
- Beginner
- 1
- 2
65 min
Course
Python Sequences

Discover several types of Python sequences, many ways of sequence iterations, and all of the common sequence operations.
- Python
- Beginner
- 1
- 2
- 3
65 min
Course
Functions, Packing, and Unpacking

Learn the ins and outs of Python functions, how to send and receive values to functions, and all about Python packing and unpacking.
- Python
- Beginner
- 1
13 min
Course
Introducing Tuples

Learn about a python data structures that's similar to lists, but with one key difference!
- Python
- Beginner
- 1
- 2
- 3
82 min
Course
React Authentication

In this course, you will learn how to implement the Basic Authentication scheme in a React application using an Express REST API.
- JavaScript
- Intermediate
- 1
- 2
52 min
Course
Designing Layouts

In this course you'll learn how to apply design principles through a series of examples. Each example will include some component that can be improved, and by making the improvement, you'll develop strong aesthetic sensibilities about things like visual and typographic hierarchy, the use of grids and alignment in layouts, and how to choose colors.
- Design
- Beginner
- 1
- 2
2 hours
Course
AJAX Basics

AJAX is an important front-end web technology that lets JavaScript communicate with a web server. It lets you load new content without leaving the current page, creating a better, faster experience for your web site's visitors. In this course, you'll learn how AJAX works and how you can use JavaScript to communicate with a web server. We'll use plain JavaScript to create AJAX requests and use the response to dynamically update your web pages. Along the way, you'll build mini-projects to reinforce your learning.
- JavaScript
- Intermediate
- 1
- 2
- 3
- 4
- 5
3 hours
Course
C# Basics

C# is the most popular programming language in the Microsoft ecosystem of products. C# code is designed to run fast and to be easily maintainable. In C# Basics, we'll learn how to work with C# to write simple programs.
- C#
- Beginner
- 1
- 2
71 min
Course
Using Cookies and JWTs for Secure Authentication

Refactor an existing authentication project by using cookies and JSON Web Token to increase security. Cookies are a way for a browser to store information while tokens are a stand-in or representation for something else.
- PHP
- Advanced
8 min
Practice
Practice Journey Maps

Journey maps are a helpful tool for UX designers that can articulate pain points that stand between a user and their intended goal. This practice session will help you analyze an experience and identify areas for improvement.

Viewed
- Design
- Beginner
7 min
Practice
Practice Empathy Maps

Empathy maps can help UX designers identify with users and understand their needs.

Viewed
- Design
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
Asynchronous Programming with JavaScript

In this course, you will learn why asynchronous code matters, and how to write code that avoids blocking behavior using three approaches: callbacks, promises, and async/await.
- JavaScript
- Intermediate
- 1
- 2
- 3
- 4
- 5
85 min
Course
Financial Statement Basics

Understanding how to read the story that financial statements tell is a really useful skill and an important part of career development. In this course, we’ll give a basic overview of the 3 main financial statements: the Profit and Loss Statement, the Balance Sheet, and the Cash Flow Statement. We’ll teach what they show you, why it matters, and give you a bunch of practice problems to help retain that knowledge. After completing this course, you will be able to read, understand, and use financial statements and build on that knowledge as you continue to learn about them.
- Data Analysis
- Beginner
5 min
Practice
Practice Design Criticism

One of the most important skills to have as a UX Designer is the ability to give and receive feedback on a project. This practice session will help you apply your critiquing abilities.

Viewed
- Design
- Beginner
- 1
- 2
- 3
91 min
Course
Getting Started with PHP Unit Testing

For all us imperfect programmers, I have some great news. There are tools that can help you keep those mistakes from breaking your application. They can also help you find and fix bugs faster, while at the same time, preventing those bugs from ever coming back. Many of these tools revolve around testing.
- PHP
- Intermediate
22 min
Workshop
Introducing the VS Code Text Editor

Text editors provide important tools that help developers write code. Get a feel for text editors and what they do by learning the basics of Visual Studio Code, a popular text editor with many tools and shortcuts to help to speed up development and make building web sites and applications faster and easier.

Viewed
- Dev Tools
- Beginner
- 1
- 2
35 min
Course
Visual Design Foundations

In this course, you'll build your design vocabulary and learn how to describe the basic building blocks of any visual image. We'll start by learning about the elements of design, like line, shape, and form. Then we'll move on to the principles of design, like balance, harmony, and movement. By the end, you'll have a better foundation for discussing design with other team members and you'll be able to make objective observations about what is often subjective subject matter.
- Design
- Beginner
- 1
- 2
98 min
Course
Introduction to User Authentication in PHP

Do you want users to be able to interact with your site? Do you want users who are active participants in the content you provide? That interaction could be purchasing products or adding products to sell, leaving comments or providing blog posts. No matter which type of interaction your site provides to users, you'll need a way to authenticate those users. In this course we'll lay the foundation for keep your data safe and secure while building a platform for active participation.
- PHP
- Beginner
- 1
- 2
- 3
2 hours
Course
Continuous Integration with Jenkins

Jenkins is a continuous integration server. Integration tests take all the code and other components of your application and integrate it together, then test it to ensure it's working properly. Jenkins can watch repos for version control software like Git or Subversion. When there's a new commit, Jenkins will check it out automatically. It will run your tests, and report the result. It can even be configured to automatically deploy your software to production if all the tests pass. This course is going to show you all the basics of using Jenkins.
- Dev Tools
- Advanced
- 1
36 min
Course
Introduction to Regular Expressions

Regular Expressions are like having a secret code for telling a computer exactly what you want. Regex, as it's often referred to, is a text string for describing a search pattern. You can think of it as a supercharged version of a find tool. In this course, we'll explore what regular expressions are, and get some practice using them.
- Dev Tools
- Intermediate
- 1
- 2
- 3
- 4
101 min
Course
REST APIs with Express

Learn the basics of building out a REST API with Express, a popular framework written for Node.js.
- JavaScript
- Intermediate
2 min
Practice
Practice Completing a Profile

Often when you register for a service, you're just asked for your email address and a password. But websites and apps that are heavily driven by your personal information often need a lot more. In this practice session, you'll create a UI that persuades users to enter more information.

Viewed
- Design
- Beginner
3 min
Practice
Practice Creating a Paywall

Websites that are content driven will often need to balance paid content and free content. One way to do this is to give a free preview in the form of a UI pattern called a paywall.

Viewed
- Design
- Beginner
4 min
Practice
Practice Designing a Product Card

Cards are a common UI pattern used to create reusable elements that can be used in multiple contexts.

Viewed
- Design
- Beginner
- 1
24 min
Course
Asynchronous Code in Express

In this course, we’ll look more closely at three approaches to handling asynchronous operations in Express: callbacks, promises, and async/await.
- JavaScript
- Intermediate
- 1
- 2
- 3
95 min
Course
CSS Selectors Quickstart

An introduction to CSS selectors for JavaScript programmers. This course covers what you need to know about CSS selectors to complete common DOM programming tasks.
- JavaScript
- Beginner
- 1
- 2
- 3
103 min
Course
Build a REST API with PHP

Build a REST API using the Slim Microframework.
- PHP
- Intermediate
6 min
Practice
Practice Semantic HTML

In this workshop, you'll practice the basics of semantic HTML. When you write markup that clearly communicates the meaning of your content, it is said that you're writing semantic markup.

Viewed
- HTML
- Beginner
- 1
- 2
- 3
35 min
Practice
Practice Object Interaction

Get more familiar with building different classes, instantiating objects and having those objects interact with one another in a complete app.
- JavaScript
- Intermediate
10 min
Practice
Practice Structuring and Grouping Content

Practice the fundamentals of structuring and grouping content with markup.

Viewed
- HTML
- Beginner
11 min
Practice
Practice File Paths

Sharpen your HTML skills by practicing writing file paths for images and links.

Viewed
- HTML
- Beginner
- 1
- 2
- 3
112 min
Course
Introduction to the Terminal

Apps for ordinary users use GUIs you control with a mouse or touchscreen. But developers know the most powerful way to interact with computers is using text, in the terminal. This course will set you on the path to terminal mastery!
- Dev Tools
- Beginner
- 1
13 min
Course
Java Maps

In this course we'll learn how to store key-value pairs by using a Map!
- Java
- Beginner
- 1
72 min
Course
Templating with Twig

Templating languages and tools are used with frameworks like Slim and Laravel to incorporate PHP and logic into static HTML web pages. In this course we will see how to apply Object-Oriented methodology to views (web pages with HTML).
- PHP
- Intermediate
20 min
Workshop
Deploying a React App

Learn how to create a production build of your React application and deploy it to a server, using free tools and services like GitHub Pages, Now, and Netlify.

Viewed
- JavaScript
- Intermediate
- 1
14 min
Course
Java Lists

In this course you'll learn how to use Lists to store groups of Objects. You'll also see when to use a List instead of an Array!
- Java
- Beginner
- 1
17 min
Course
Generics in Java

Learn how to pass type parameters to Objects or functions in this course on generics!
- Java
- Beginner
- 1
19 min
Course
Interfaces in Java

Learn how to make more robust and flexible code bases by using interfaces!
- Java
- Beginner
- 1
- 2
72 min
Course
Introducing MVC Frameworks in PHP

In this course we will build upon what we have learned about Object-Oriented Programming to build a basic website. By using the Slim Microframework, we will explore common MVC concepts without the framework hiding too much functionality out of the box.
- PHP
- Intermediate
- 1
15 min
Course
Design Criticism

One of the most important parts of design is being able to talk about it with other people. Giving feedback and communicating suggested changes is key to moving forward people and businesses. In this course, you'll learn how to formulate constructive criticism and talk objectively about the subjective topic of design.
- Design
- Beginner
- 1
- 2
59 min
Course
Introduction to Churn and Lifetime Value (LTV) Analysis

This introduction to Churn and Lifetime Value ("LTV") analysis course is designed for absolute beginners to give them exposure to the common business metrics of Churn and LTV. In the course we learn about recurring revenue, churn, LTV, why they matter, and navigate some of the nuances of the metrics.
- Data Analysis
- Beginner
8 min
Practice
Practice Input and Output in Python

You've got the ability to get information from the user, input, and show them some results, output. Let's put your skills to work!

Viewed
- Python
- Beginner
- 1
12 min
Practice
Practice Creating and Using Functions in Python

Practice your function skills
- Python
- Beginner
15 min
Practice
Practice State in React

Practice initializing and managing state in React by building a star rating component.

Viewed
- JavaScript
- Intermediate
- 1
- 2
- 3
- 4
- 5
78 min
Course
Building a Portfolio

Your portfolio is the most immediate means for a potential employer to decide if you’re a good fit. This course will give you insight into creating and curating a collection of your work that will most accurately reflect what you value as a designer/developer, what might be like to work with you, and finally, what to expect in terms of your output.
- Design
- Beginner
- 1
- 2
- 3
- 4
101 min
Course
Git Branches and Merging

This course introduces the concept of branches in Git and shows practical uses for managing both local development and collaborative workflows.
- Dev Tools
- Intermediate
- 1
- 2
- 3
- 4
2 hours
Course
UX Content Strategy

With so many websites and apps offering similar content and features, you need to provide a unique experience to compete - something memorable and enjoyable that resonates with your users. UX Content is how it’s done. From your home page and product descriptions down to your error messages, UX content can turn generic interactions into memorable experiences. By establishing a unique voice and personality, you can create an environment that welcomes, supports, and inspires users during their visit. So in this course, we’ll discuss why UX Content is so important, where you need it, how to create it, and how to ensure it’s effective.
- Design
- Intermediate
- 1
- 2
3 hours
Course
Introduction to pandas

Pandas provides fast, flexible, and expressive data structures that have been designed to make working with relational or “labeled” data not only easy, but also intuitive. It’s the fundamental high-level building block for doing practical and real world data analysis in Python.
- Python
- Intermediate
- 1
- 2
- 3
71 min
Course
Prototyping with Adobe XD

Adobe XD is a visual prototyping tool for PC and Mac. In this course, you'll learn how to use Adobe XD by building a mockup for a travel booking app. By the end, you'll be able to create interactive prototypes that can be shared with others.
- Design
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
Evaluating Design

An essential part of the UX design process is measurement and validation. This course will provide an overview of the methods available for measuring the success of a design including A/B testing, surveys and usability testing. It will specifically deep dive into usability testing so that students will learn about what’s involved in running such a test, from preparing a test plan to presenting actionable findings.
- Design
- Beginner
10 min
Practice
Practice React Component Rendering

Sharpen your React skills by practicing JSX, creating and rendering components, passing down props, as well as iterating over data, and more.

Viewed
- JavaScript
- Intermediate
- 1
19 min
Practice
Practice Classes in JavaScript

Practice building and working with classes in JavaScript.
- JavaScript
- Intermediate
- 1
14 min
Practice
Practice Getters and Setters in JavaScript

Practice writing and using getters and setters in JavaScript classes.
- JavaScript
- Intermediate
- 1
- 2
- 3
- 4
- 5
2 hours
Course
Introduction to QA Engineering

Learn how to become an effective test engineer. Testing is something every developer must do to write effective and quality code, but going about what you should test and how to do it can be a challenging question. Quality Assurance is the practice of monitoring other developers' work and creating processes and tests that will ensure the product meets the end user’s expectations and limiting the amount of bugs that are released. This course will teach you how to become a Software Quality Assurance Engineer.
- Quality Assurance
- Beginner
35 min
Workshop
React Context API

In the typical React data flow, components communicate with each other via props. A parent passes props down to child components. Sometimes the intermediary components get props passed to them with the sole purpose of passing that data down one (or several) more levels deep. This cascade of props is often referred to as "prop drilling". The React Context API provides a way to pass data to components without having to pass props manually at every single level.

Viewed
- JavaScript
- Intermediate
- 1
- 2
- 3
- 4
2 hours
Course
React Components

Components are the core building blocks of a React application. This course will level-up your React skills by providing a better understanding of class vs. functional components, state and lifecycle methods, and how to split your UI into reusable and composable components.
- JavaScript
- Intermediate
- 1
42 min
Course
Inheritance in Java

In this course we'll learn how to use inheritance to use one class as the foundation for another!
- Java
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
React Basics

React is a JavaScript library for building user interfaces. React makes building and maintaining the user interface of your application faster and easier by breaking it up into smaller, reusable components. It also helps eliminate the complexity that comes with updating your DOM elements when the user interacts with your application.
- JavaScript
- Intermediate
- 1
24 min
Course
Introducing IntelliJ and Unpacking Packages

Professional developers don't typically develop in the command line, they use an Integrated Development Environment (IDE) like IntelliJ IDEA. In this course, we'll see how to get started with IntelliJ IDEA and learn how to use packages.
- Java
- Beginner
- 1
- 2
119 min
Course
Algorithms: Sorting and Searching

This course will look at algorithms in two categories: sorting and searching. We'll implement well-known sorting algorithms like selection sort, quicksort, and merge sort. You'll also learn basic search algorithms like sequential search and binary search.
- Computer Science
- Intermediate
- 1
- 2
- 3
- 4
2 hours
Course
Introduction to Data Structures

In computer science a data structure is a construct that allows us to organize and store data in our programs. In this course we're going to learn about two introductory data structures - arrays and linked lists! We'll look at common operations and how the runtimes of these operations affect our everyday code. For the rest of the course we're going to bring our knowledge of algorithms and data structures together to solve the problem of sorting data using the merge sort algorithm
- Computer Science
- Beginner
23 min
Practice
Practice Properties in C#

In this practice session, you'll practice creating and using properties in C#.

Viewed
- C#
- Beginner
19 min
Practice
Practice Loops in C#

In this practice session, you'll practice using for and foreach loops in C#.

Viewed
- C#
- Beginner
- 1
21 min
Practice
Practice Object Basics in JavaScript

Practice working with object literals in JavaScript.
- JavaScript
- Beginner
- 1
- 2
- 3
- 4
- 5
2 hours
Practice
Object-Oriented JavaScript: Challenge

Practice your object-oriented JavaScript skills by building a fun and interactive 'Four in a Row' game.
- JavaScript
- Intermediate
- 1
- 2
- 3
- 5
104 min
Course
Introduction to Wireframing

Wireframing is a useful part of the design process. Throughout a website or mobile app project, you will have a lot of ideas and the best way to sort through those ideas is to brainstorm. Wireframes are a visual artifact of brainstorming, and the goal is to make them with minimal effort, as to encourage ideation. Whether you're a designer or not, wireframing is an important skill to have in your toolkit. It's beneficial for product managers, marketers, or anyone else with ideas for a website or mobile app. Wireframes are a valuable tool for visualizing user experiences, iterating on ideas, and sharing ideas with others.
- Design
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
Introduction to Algorithms

Algorithms are a fundamental topic in computer science, power many of the largest companies today and are used in making many decisions that affect our day to day lives - in obvious places like Google's PageRank algorithm to more obscure use cases like national security and local policing. In this introductory course, we're going to take our first steps towards understanding the world of algorithms and data structures. Before we can study individual algorithms we're going to spend time learning how to evaluate algorithms, how to make comparisons and how to develop algorithmic thinking
- Computer Science
- Beginner
- 1
- 2
- 3
70 min
Course
Scraping Data From the Web

Almost any information you want is available on the Internet. Web scraping is a key tool for data mining that information allowing for web page exploration and collection for a variety of reporting. The tools and techniques used in this course allow for data to be collected that would otherwise not be easily accessible without robotic assistance.
- Python
- Intermediate
- 1
30 min
Course
Introduction to REST APIs

Many of the APIs you'll encounter on the Web use an underlying design idea known as REST, which stands for Representational State Transfer. Understanding what and how a REST API provides will help you build better and stronger APIs for your users.
- Dev Tools
- Beginner
5 min
Practice
Practice Vue.js Templating

Practice displaying data in a Vue.js template, as well as adding functionality to templates with Vue directives and methods.

Viewed
- JavaScript
- Beginner
9 min
Practice
Practice Vue.js List Rendering

Practice list rendering, writing methods, computed properties and adding functionality to forms with Vue.js

Viewed
- JavaScript
- Beginner
- 1
- 2
- 3
2 hours
Course
Introduction to NumPy

NumPy is short for Numerical Python. It is the fundamental package for scientific computing. You will see it at play in just about everywhere Python needs to deal with data. This course gives a gentle introduction to the powerful library.
- Python
- Intermediate
31 min
Practice
Practice Inheritance in C#

In this practice session, you'll practice using class inheritance in C#.

Viewed
- C#
- Beginner
3 min
Practice
Practice Python While Loops

While you are learning about loops, take a moment to practice using while loops.

Viewed
- Python
- Beginner
5 min
Practice
Practice Creating and Indexing Lists

Let's practice creating lists and printing their contents.

Viewed
- Python
- Beginner
25 min
Practice
Practice Encapsulation and Arrays in C#

In this practice session, you'll practice encapsulation and arrays in C#.

Viewed
- C#
- Beginner
- 1
- 2
- 3
- 4
94 min
Course
Creating User Experiences

Join us as we learn the basic principles of User Experience Design and how it shapes everyday interactions with products. By structuring products around users’ needs, we can ensure that the products do their job. You will learn how to meet users where they are, think through intuitive experiences, and create products that more effectively meet both your goals and your end users’ goals. This course will help you think more critically through the steps and decisions a user makes while interacting with your product. If you’re considering a career in User Experience (UX) or want to learn more about it, this course will expose you to how to design and plan around the people who use your product.
- Design
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
Information Architecture

In this age of information, it’s not always easy to know how content should be structured - everyone has a different perspective. In this course, you’ll learn about information architecture: what it is, and how it relates to web design and user experience. We’ll learn about the fundamentals of IA components like navigation, labeling, and content organization, as well as techniques to test and evaluate existing website structure. By the end, you’ll know how to organize website content and provide a clear, logical experience for any user.
- Design
- Beginner
18 min
Practice
Practice Creating Classes in C#

In this practice session, you'll practice creating classes using C#.

Viewed
- C#
- Beginner
18 min
Practice
Practice Methods in C#

In this practice session, you'll practice adding methods to classes in C#.

Viewed
- C#
- Beginner
6 min
Practice
Practice Comparisons in Python

A quick review of data types, making comparisons, and using if and elif statements in Python.

Viewed
- Python
- Beginner
11 min
Workshop
HTML Dialog

Dialog boxes are a common design pattern across many websites, so the W3C created the <dialog> element as part of the HTML standard. In this Workshop, we'll learn how to use the <dialog> element in combination with JavaScript to trigger modal and non-modal windows.

Viewed
- HTML
- Beginner
- 1
- 2
- 3
- 4
97 min
Course
JavaScript Quickstart

Get up to speed with the basics of JavaScript. In this course, you'll learn the fundamental concepts and syntax of the JavaScript programming language.
- JavaScript
- Beginner
12 min
Workshop
Pipenv: The Python Package Manager

Pipenv is a production-ready tool that aims to bring the best of all packaging worlds to the Python world. It harnesses Pipfile, pip, and virtualenv into one single command.

Viewed
- Python
- Beginner
30 min
Practice
Practice Using Room

The Room persistence library makes working with databases much easier. In this practice session will build a simple note-taking app and use a Room database to store the notes!

Viewed
- Android
- Intermediate
- 1
- 2
- 3
94 min
Course
Data Persistence with Room

Storing data is important in any Android app. In this course we'll use the Room library to store data in a SQLite database!
- Android
- Intermediate
- 1
- 2
29 min
Course
The JavaScript Ecosystem

In this course, we'll explore the exciting JavaScript ecosystem. You'll learn how Node.js helped JavaScript reach new heights, discover applications and tools built with JavaScript, and evaluate popular JavaScript frameworks, libraries, developer roles, and more.
- JavaScript
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
Vue.js Basics

Vue.js is a front end JavaScript framework with a gentle learning curve. Vue’s lower barrier to entry, ease of use and fantastic documentation make it a fun and accessible technology. In this course, you’ll learn fundamental concepts that will help you get up and running with Vue. You’ll also gain skills and foundational knowledge that will help prepare you to tackle the complexities of other frameworks.
- JavaScript
- Beginner
- 1
- 2
- 3
- 4
97 min
Course
Android Lists and Adapters

A collection of data is often represented in an app in some sort of list. In this course we will learn about the popular Android component called RecyclerView to display and interact with a list of items. We will see how to use some default components as well as building custom lists with our own layouts and adapters.
- Android
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
User Authentication with ASP.NET Identity

In this course, you'll learn how to leverage user authentication to secure an application and protect your users' data. You'll update an existing ASP.NET MVC application to use Microsoft's ASP.NET Identity system to implement cookie-based authentication.
- C#
- Intermediate
- 1
- 2
45 min
Course
The Landscape of JavaScript

JavaScript is everywhere and used in all phases of development from software to hardware. This course walks you through the modern landscape of JavaScript, and what it means to learn and program with JavaScript now and beyond.
- JavaScript
- Beginner
- 1
- 2
- 3
66 min
Course
Intermediate Selenium WebDriver

Manually testing your website can only take you so far. Learn how to use Selenium WebDriver to automate the process for you, and alert you to problems before your users see them.
- Quality Assurance
- Intermediate
- 1
- 2
- 3
105 min
Course
Introducing Lists

Lists are a powerful data type that allow you to store multiple ordered values in a single container. You are gonna love them.
- Python
- Beginner
- 1
- 2
- 3
- 4
3 hours
Course
Python Basics

Learn the building blocks of the wonderful general purpose programming language Python.
- Python
- Beginner
- 1
- 2
- 3
- 4
- 5
- 6
3 hours
Course
Build a Weather App

In this course, we will learn about a very common and important element of Android development: downloading data from the Internet! We will request weather forecast data from a free API provided by darksky.net. We will then parse that data (in JSON format) and display it in a single-page app. We will also see how to handle errors and situations when the network is unavailable.
- Android
- Beginner
- 1
- 2
- 3
- 4
111 min
Course
Object-Oriented JavaScript

In this course you'll learn the basics of object-oriented programming in JavaScript along with the new ES2015 Class syntax.
- JavaScript
- Intermediate
- 1
44 min
Course
Environment Variables with PHP

In the lifecycle of an application, there are multiple environments such as Development, Testing and Production. Each environment may have its own unique sources and credentials that need to be managed and secured. Environment variables are accessible to any programming language, and allow applications to adapt to their environment while keeping credentials secure.
- PHP
- Intermediate
- 1
- 2
- 3
3 hours
Course
Introduction to Git

Git is a version control system - it helps you manage the different versions of your project files, and helps keep your work safe. This course will show you how Git works, and how to upload your projects to GitHub.
- Dev Tools
- Beginner
- 1
- 2
- 3
58 min
Course
Machine Learning Basics

Machine learning encompasses many different ideas, programming languages, frameworks, and approaches to the subject, so the term "machine learning" is difficult to define in just a sentence or two. But essentially, machine learning is giving a computer the ability to write its own rules and learn about new things, on its own. In this course, we'll explore some of the big ideas, and toward the end, we'll even write a little bit of code in Python that can make some intelligent predictions.
- Machine Learning
- Beginner
- 1
- 2
- 3
- 4
60 min
Course
Intermediate Excel

Learn how to perform intermediate level functions in Microsoft Excel. In this course, you will learn how to use LOOKUP functions, build and modify pivot tables, use conditional formatting, find and replace data, and check for errors. Learning these tools will help you bring data to life and allow you to use Excel in a more meaningful way.
- Data Analysis
- Intermediate
26 min
Practice
Practice Basic Arrays in JavaScript

Practice creating array literals, accessing array items, and using array methods to add and remove array items.

Viewed
- JavaScript
- Beginner
17 min
Workshop
Using Create React Native App

Learn the fastest way to get up and running with React Native.

Viewed
- JavaScript
- Intermediate
4 min
Practice
Practice Java Arrays

Get a better understanding of Arrays in Java by completing this practice session!

Viewed
- Java
- Beginner
5 min
Practice
Practice Java Objects

In this Practice Session we'll create an Object to represent a cow.

Viewed
- Java
- Beginner
- 1
- 2
- 3
- 4
56 min
Course
Introduction to Product Design

Over the last 10 years, design has proven to be essential to the success of a business. With the rise of the internet and more software being created, and as start-ups and tech companies realize the impact of design on the business and on digital products, there has been an increasing need for design. This course will help you understand and get familiar with product design, the role of design throughout product development and delivery, the different components of product design, and the process of designing digital products and experiences.
- Design
- Intermediate
44 min
Workshop
Working with the Fetch API

Learn how to use the Fetch API to fetch resources.

Viewed
- JavaScript
- Intermediate
- 1
- 2
- 3
75 min
Course
Introduction to Data Visualization with Matplotlib

Get started creating charts with the Python library, matplotlib, an industry standard data visualization library. Matplotlib provides a way to easily generate a wide variety of plots and charts in a few lines of Python code. It is an open source project that can be integrated into Python scripts, jupyter notebooks, web application servers, and multiple GUI toolkits. Whether you are exploring sample data available on the internet, or your own business data, learning matplotlib is a great place to start your data visualization journey.
- Python
- Beginner
8 min
Practice
Practice Basic jQuery Methods

Practice enhancing small projects using a variety of jQuery methods.

Viewed
- JavaScript
- Beginner
6 min
Practice
Practice Working with jQuery Collections

Practice working with collections in JQuery.

Viewed
- JavaScript
- Beginner
8 min
Practice
Practice Handling Events in jQuery

Practice responding to user actions with jQuery.

Viewed
- JavaScript
- Beginner
8 min
Practice
Practice Let and Const in JavaScript

Practice working with let and const variables in JavaScript.

Viewed
- JavaScript
- Beginner
8 min
Practice
Practice Arrow Functions in JavaScript

Practice arrow function syntax in JavaScript.

Viewed
- JavaScript
- Beginner
- 1
- 2
- 3
- 4
111 min
Course
OWASP Top 10 Vulnerabilities

Welcome again to the realm of web security, where millions of dollars and people’s lives are on the line. Not every web application has that much on the line, but many do, and it’s your job as the developer or manager to keep your users safe! From protecting static web sites to the most complex of web services and APIs, every web developer should be aware of, and adept at writing secure code and building systems that can stand up to the strongest of malicious users. In this course, we will build on earlier courses in basic web security by diving into the OWASP Top 10 for Node.js and JavaScript. The OWASP Top 10 is a trusted knowledge framework covering the top 10 major web security vulnerabilities, as well as providing information on how to mitigate them. Throughout this course, we will explore each vulnerability in general and in the scope of how they occur in JavaScript (as the frontend) and Node.js (as the backend).
- Security
- Intermediate
4 min
Practice
Practice Hashing Passwords in JavaScript

When storing users' passwords, the most important thing to keep in mind is that you should always hash your passwords. Hashing is a one-way process of securing data with a strong algorithm. As of 2017, the accepted hashing algorithm is bcrypt.

Viewed
- JavaScript
- Beginner
- 1
- 2
- 3
- 4
18 min
Practice
Practice Sinatra Basics

Let's practice the basics of creating web apps using Sinatra.
- Ruby
- Beginner
- 1
- 2
- 3
61 min
Practice
Practice Ruby on Rails Basics

Practice the basics of creating Ruby on Rails applications!
- Ruby
- Beginner
- 1
40 min
Course
Creating and Modifying Database Tables

Learn how to create and modify your own database tables as we work through a real-life example! We'll talk about how to choose the right structure for a database and then see how we can implement that structure.
- Databases
- Intermediate
8 min
Practice
Practice Selecting DOM Elements

In this workshop, you will practice selecting DOM elements with JavaScript.

Viewed
- JavaScript
- Beginner
5 min
Practice
Practice Hashing Passwords in PHP

When storing user’s passwords, the most important thing to keep in mind is that you should always hash your passwords. Hashing is a one-way process of securing data with a strong algorithm. As of 2017, the accepted hashing algorithm is bcrypt.

Viewed
- PHP
- Intermediate
20 min
Practice
Practice Object Literals in JavaScript

Practice creating, using and modifying simple object literals in JavaScript

Viewed
- JavaScript
- Beginner
7 min
Workshop
SQLite from the Command Line

Learn how to create and manage databases right from the command line on your own computer!

Viewed
- Databases
- Beginner
37 min
Workshop
Using the Angular CLI

In this workshop, you'll learn how to use the Angular CLI to easily create, modify, and serve Angular apps.

Viewed
- JavaScript
- Beginner
18 min
Workshop
Common Table Expressions Using WITH

Common Tables Expressions, or CTEs, use the WITH keyword to make more readable, modular and easy to understand SQL queries.

Viewed
- Databases
- Intermediate
5 min
Practice
Practice Traversing the DOM

Practice Traversing the DOM in JavaScript.

Viewed
- JavaScript
- Beginner
5 min
Practice
Practice Template Literals

Practice using template literals in JavaScript.

Viewed
- JavaScript
- Beginner
- 1
- 2
- 3
2 hours
Course
jQuery Basics

jQuery is an immensely popular JavaScript library used to add interactivity to webpages. It's a mature and robust tool that can help you build confidence as a developer by helping you quickly and easily get projects up and running. This course explores the fundamentals of manipulating elements on a webpage and responding to user interactions. We cover what jQuery is, why you'd want to use it, and how to include it in your projects. Throughout the course, you'll use jQuery to enhance several small projects and learn how to add a level of flair and interactivity to any site you work on.
- JavaScript
- Beginner
8 min
Practice
Practice Manipulating the DOM

Practice Manipulating the DOM with JavaScript.

Viewed
- JavaScript
- Intermediate
- 1
- 2
- 3
72 min
Course
Introduction to Application Security

Welcome to the realm of web security, where millions of dollars and people’s lives are on the line. Well, not in all cases, but some! From protecting static web sites to the most complex of web services and APIs, every web developer should be aware of and adept at writing secure code and building systems that can stand up to the strongest of malicious users. In this course, we will lay the groundwork for what you need to know to get started exploring the vast field of web security, and along the way you will begin to realize that security isn’t about checking boxes, but rather about embedding the thought process and principles of rock-solid security into every line of code you write. First, we will discuss why security matters to you as a web developer, then we will look at data security at an implementation level, then finally we will examine the art of maintaining your websites, apps, and services on a daily basis.
- Security
- Intermediate
37 min
Workshop
Using CSS Variables

Learn how to use native CSS variables to make your stylesheets less repetitive, easier to maintain and more.

Viewed
- CSS
- Advanced
10 min
Practice
Practice Loops and Conditionals in C#

In this practice session, you'll practice writing loops and conditional statements using C#.

Viewed
- C#
- Beginner
13 min
Practice
Practice Validation and Exceptions in C#

In this practice session, you'll practice validating input and catching exceptions using C#.

Viewed
- C#
- Beginner
- 1
- 2
- 3
75 min
Course
Data Analysis Basics

Learn how to make better decisions with data in this course on data analysis. We'll start by looking at what data analysis is, and then we'll see how we can use data analysis to create better outcomes.
- Data Analysis
- Beginner
- 1
- 2
- 3
- 4
72 min
Course
Introduction to GraphQL

Simplify your backend with GraphQL, the new query language and runtime that is taking the world by storm. With GraphQL, it’s no longer necessary to resolve a bunch of different REST endpoints to get a complete chunk of data. We can use GraphQL to tell a server which data we want, and exactly what it should look like. Whether you’re a front-end developer looking to simplify your workflow, or a back-end developer looking for a way to compose more robust APIs, this course is the perfect place to start.
- APIs
- Intermediate
- 1
30 min
Practice
Practice forEach in JavaScript

Now that you've learned about JavaScript's forEach method, practice using it with this series of challenges.
- JavaScript
- Beginner
- 1
- 2
- 3
102 min
Course
Digital Media Through Photoshop

Get started with creating your own digital media files. Setting up your documents properly before you start creating will be crucial for your end product. In this course we’ll learn what those considerations are as well as how to choose the right options. We’ll introduce the most prolific creative application Photoshop to set up our files, make some adjustments and come out the other end with a banner ad suitable for use on the the desktop and mobile as well as print. This course is perfect for anyone looking to get started with design or photography.
- Design
- Beginner
26 min
Workshop
What's New in React 16

Get up to speed with new features in React 16, a complete rewrite of the React library.

Viewed
- JavaScript
- Intermediate
- 1
- 2
- 3
71 min
Course
Prototyping with Figma

In this course, you'll learn how to build interactive and sharable prototypes in Figma, a web-based visual prototyping tool. You'll create a prototype for a "prosumer" mobile photography app, and by the end, you'll have a better understanding of how to create interactive prototypes that can be shared with project stakeholders and team members.
- Design
- Beginner
- 1
- 2
- 3
100 min
Course
Active Record Associations in Rails

Most of your Rails models are going to be connected to other models in some way. An Author has many Articles, and each Article belongs to an Author. A Doctor has many Patients, and a Patient may have many Doctors as well. Rails uses associations to make it easy to track these relationships in your database.
- Ruby
- Intermediate
- 1
- 2
- 3
93 min
Course
Java Arrays

Arrays are a container object that allow you store many values of the same type in a single variable
- Java
- Beginner
- 1
- 2
- 3
49 min
Course
Getting Started With ES2015

ES2015, also called ES6, is a newer version of the JavaScript language that’s well supported in browsers and commonly used by programmers. In this course, you'll get up-to-speed with ES2015 basics and be well on your way to writing modern JavaScript. You'll learn best practices for creating variables, using the let and const keywords, and a better way to concatenate string values using template literals. You'll also learn the compact syntax for creating functions using "arrow syntax."
- JavaScript
- Beginner
- 1
- 2
- 3
100 min
Course
JavaScript Array Iteration Methods

Learn how to access and transform data in arrays with JavaScript's array iteration methods. You'll learn how, why and when to use these powerful methods to make your code easier to read and more concise.
- JavaScript
- Beginner
- 1
- 2
- 3
3 hours
Course
Building Services with ASP.NET Web API

Services expose data and processes through APIs (Application Programming Interfaces) implemented using common approaches or standards. Decoupling our back-end from our front-end makes it possible for our services to support multiple client apps. We can even allow other developers and organizations to consume and use our services to further broaden the reach of our applications. In this course, you'll learn how to use the ASP.NET Web API framework to build a RESTful service or HTTP API. As you learn about Web API, you'll create a service for the Fitness Frog single-page web app (SPA) developed using Angular.
- C#
- Intermediate
- 1
- 2
- 3
- 4
2 hours
Course
Bootstrap Basics

Learn to build with Bootstrap, one of the most popular open source front end frameworks, to help you build a functional design and layout in little time.
- CSS
- Beginner
15 min
Workshop
Introduction to Anaconda

Learn why you want to use Anaconda, and then learn how

Viewed
- Python
- Beginner
- 1
- 2
- 3
- 4
- 5
2 hours
Course
Ruby Basics

Ruby is a programming language with a focus on simplicity and productivity. It has an elegant syntax that is natural to read and easy to write. In Ruby Basics, we'll learn how to work with Ruby and write simple Ruby programs.
- Ruby
- Beginner
5 min
Practice
Practice CSS Grid: Columns, Rows and Gaps

Practice declaring row and column tracks, as well as applying gutters between them.

Viewed
- CSS
- Intermediate
6 min
Practice
Practice Flexible CSS Grid Layout

Practice using CSS Grid features that adapt your content to available space and intelligently size and position items within the grid container.

Viewed
- CSS
- Intermediate
8 min
Practice
Practice Grid Template Areas

Let's practice using grid template areas, a feature of CSS Grid that lets you assign named grid areas to items, and use those names to position items on the grid.

Viewed
- CSS
- Beginner
- 1
- 2
- 3
- 4
- 5
3 hours
Course
Build a Simple Android App with Kotlin

This course covers the very basics of Android development. We will build a simple app that will serve up some fun facts when you tap on a button. We introduce you to programming in Android, a tool for Android development called Android Studio, and some very basic concepts of the Android Software Development Kit, or SDK. By the end you will have a good idea of how a basic app works, and you will be armed with the knowledge to start building more.
- Android
- Beginner
- 1
- 2
- 3
111 min
Course
CSS Grid Layout

CSS Grid Layout provides a built-in, more efficient way of designing grid-based layouts in the browser. It brings a new set of properties, functions and flexible units that let you control the exact placement and sizing of grid components.
- CSS
- Intermediate
- 1
- 2
- 3
110 min
Course
Introduction to Xamarin

An introduction to developing mobile apps using the Xamarin platform. You'll learn what the Xamarin platform is and how it works. You'll setup a development environment that will allow you to build Android and iOS apps. You'll also learn techniques to share code across mobile platforms. Complete this course and you'll have a functioning app on Android and iOS using the Xamarin platform.
- C#
- Intermediate
22 min
Practice
Practice Writing Loops in Python

Programming with loops can be tricky, and the best way to get comfortable and grow your understanding is by practicing them.

Viewed
- Python
- Beginner
6 min
Practice
Practice Creating a C# Workspace

In this practice session, you'll practice creating a C# workspace—including compiling and running a simple console application.

Viewed
- C#
- Beginner
- 1
- 2
- 3
- 4
- 5
103 min
Course
Introduction to Docker

Docker allows any developer of any language to package an app into a container, like a shipping container. Containers include an app and all the other software it depends on, like databases. Containers let your users easily run your website, app, or service on any operating system they want. This course will show you how Docker works, and how it can make it easier to distribute your software!
- Dev Tools
- Intermediate
- 1
- 2
- 3
2 hours
Course
Introduction to Selenium

As web applications grow in size it becomes difficult to reliably and thoroughly verify that the application behaves as intended. Manually stepping through the system gets tedious and time consuming. That's where automated testing tools become invaluable. In this course we will learn to use Selenium WebDriver, one of the most popular utilities for automating interactions with web browsers, to build automated tests for the purpose of verifying and maintaining a quality application.
- Quality Assurance
- Intermediate
- 1
- 2
- 3
113 min
Course
React by Example

Learn React programming patterns by building an application for keeping track of RSVP's! We'll start at the beginning, using create react app (https://github.com/facebookincubator/create-react-app) to initialize the project, and by the end you'll have a functional application.
- JavaScript
- Intermediate
- 1
- 2
- 3
2 hours
Course
Designing Interfaces in PHP

An interface is a type of contract that assures that certain abilities are available on on a particular object class. We'll write and extend multiple interfaces, then implement them to design and match functionality. Interfaces do not store any implementation details themselves. To share implementation details between classes, we harness the power of inheritance. Abstract classes prevent a parent class from being directly instantiated, while at the same time defining methods that MUST be implemented in any extending children. This course will combine interface contracts with class hierarchy to leverage the benefits of each concept. We'll explain the differences between interfaces and abstract classes, and give you the knowledge you need to build and implement both in your own projects.
- PHP
- Intermediate
26 min
Workshop
Dependency Injection in ASP.NET

In this workshop, you'll learn about dependency injection and how to use it in ASP.NET MVC and ASP.NET Core applications.

Viewed
- C#
- Intermediate
9 min
Bonus Series
Takeaways

Got some time during your lunch break? Want to get something to takeaway?

Viewed
- 2 topics
  - Java
  - Go
- 1
- 2
59 min
Course
Prototyping in the Browser

Before you design a website, it's important to have some kind of a plan or a wireframe to guide your efforts. But sometimes when you go from a simple sketch to digital pixels, the results aren't exactly what you expect. When you work with real HTML and CSS, and you're able to see your site on a real screens, you're able to see a more accurate representation of the final result. In this course, we're going to build a website prototype using the Bootstrap web framework.
- Design
- Beginner
- 1
- 2
- 3
43 min
Course
Presentation Skills

Learn techniques for delivering effective presentations so you can help guide decisions, influence change, and make an impact on the business.
- Business
- Beginner
- 1
- 2
- 3
84 min
Course
Security Literacy

The internet is an invaluable resource for information and entertainment, but it doesn’t always protect your privacy and identity. This course offers an overview on how to stay safe and secure when using your browser and beyond. We’ll introduce foundational concepts about how online activity translates to internet traffic. We’ll then explore some common ways that attackers can view and manipulate this traffic for their uses and how to protect against them. And finally, we’ll establish some industry-recommended habits to keep you and your data secure.
- Security
- Beginner
- 1
- 2
- 3
87 min
Course
Regular Expressions in JavaScript

Learn how regular expressions can help you validate forms, search and replace in strings, and more. Regular expressions match patterns in strings. Pattern matching is a powerful tool programs can use to "understand" the text users type in.
- JavaScript
- Intermediate
- 1
- 2
- 3
115 min
Course
Python for File Systems

Python is a great language for the automated handling of files and directories. In this course, you'll learn how to navigate your file system with Python and create and manipulate files and directories. At the end, you'll build a project starter to make starting your Flask project just a little bit easier.
- Python
- Beginner
- 1
- 2
- 3
- 4
- 5
3 hours
Course
Build a Simple Android App with Java

This course covers the very basics of Android development. We will build a simple app that will serve up some fun facts when you tap on a button. We introduce you to programming in Android, a tool for Android development called Android Studio, and some very basic concepts of the Android Software Development Kit, or SDK. By the end you will have a good idea of how a basic app works, and you will be armed with the knowledge to start building more.
- Android
- Beginner
15 min
Workshop
Jupyter Notebooks

The Jupyter project has an amazing tool for Python, Julia, R, and other languages. Learn how to install Jupyter Notebooks, use them, and install kernels for other languages.

Viewed
- Python
- Beginner
- 1
- 2
70 min
Course
Introducing JavaScript

Learn the fundamentals of programming by building a JavaScript video game. This fun, exploratory course teaches you basic concepts like variables, values, conditional statements and functions by interactively playing with code while creating a game.
- JavaScript
- Beginner
- 1
- 2
67 min
Course
Data Visualization with Bokeh

Learn how to use the Bokeh library to generate interactive charts, graphs, and other visualizations using Python. We'll explore a world population data set and see how to generate different charts using this powerful library.
- Python
- Intermediate
- 1
- 2
43 min
Course
Web Design Process

Going from a blank screen to a finished website can be daunting. In this course, you'll learn about the major steps involved in designing websites. We'll learn how to gather information, explore potential concepts, and iterate on a design. By the end, you'll have the foundation you need to continue your design journey.
- Design
- Beginner
- 1
- 2
- 3
- 4
90 min
Course
Data Visualization with Excel

This overview of Data Visualization in Excel is designed for absolute beginners, but can also benefit people who have already been using Excel to create charts. You will learn about the fundamentals of data visualization, how create types of charts in Excel, and tips on how to get the most of the charts you make.
- Data Analysis
- Beginner
22 min
Workshop
Using Create React App

Learn to quickly set up React projects using Create React App.

Viewed
- JavaScript
- Intermediate
- 1
- 2
- 3
51 min
Course
Introduction to Big Data

Big data represents an entire ecosystem of data sets, tools, and applications. This course is intended to get you familiar with the concepts, problem spaces, and overall ecosystem of Big Data.
- Data Analysis
- Intermediate
- 1
- 2
- 3
- 4
64 min
Course
SQL Reporting by Example

In this course you'll get lots of practice writing SQL queries in a realistic environment!
- Databases
- Intermediate
35 min
Workshop
Debugging CSS with Chrome DevTools

In this workshop, we'll explore the most useful and efficient tool for debugging CSS: Chrome Developer Tools.

Viewed
- CSS
- Beginner
- 1
- 2
- 3
60 min
Course
Callback Functions in JavaScript

Callback functions are a foundational concept in JavaScript. Callbacks are used in timers, user interaction events, loading data from a server and used in Node.js. Whether you're a budding front-end or back-end developer, callbacks are everywhere!
- JavaScript
- Beginner
- 1
- 2
- 3
- 4
3 hours
Course
HTML Basics

Learn HTML (HyperText Markup Language), the language common to every website. HTML describes the basic structure and content of a web page. If you want to build a website or web application, you'll need to know HTML.
- HTML
- Beginner
36 min
Workshop
Entity Framework Query Performance

In this workshop, you'll learn how to audit Entity Framework queries and resolve common performance issues.

Viewed
- C#
- Beginner
6 min
Practice
Practice Basic Variables, Input, and Output in C#

In this practice session, you'll practice declaring and assigning variables, capturing user input, and writing output to the console using C#.

Viewed
- C#
- Beginner
- 1
- 2
52 min
Course
AWS with S3

Whether you're building a major web site, backing up vacation photos, or sharing large files with friends, Amazon's Simple Storage Service, S3, will come in handy. In this course, you'll learn the basics of setting up S3, creating buckets, and controlling file permissions.
- Dev Tools
- Beginner
- 1
- 2
- 3
- 4
- 5
2 hours
Course
Go Language Overview

This overview of the Go programming language is designed for developers who are already familiar with another language. It's a quick tour of the language's core features such as interfaces and goroutines.
- Go
- Intermediate
- 1
- 2
59 min
Course
Markdown Basics

Learn the basics of Markdown—a simple, text-to-html tool used to format writing on the Web. It's used to write blogs, forum posts, technical documentation, and more. Whether you're having trouble formatting GitHub README files or want to learn about Markdown in general, this course is a great place to start.
- Dev Tools
- Beginner
- 1
- 2
- 3
- 4
- 5
- 6
4 hours
Course
Express Basics

Learn how to use Express.js to build dynamic websites on the Node.js platform. In the process, you'll learn some fundamental HTTP concepts that you can apply to any other framework!
- JavaScript
- Intermediate
14 min
Workshop
Introducing the Atom Text Editor

Text editors are simple but important tools that let developers write code. They include many helpful features to speed up development and make programming and building web sites faster and easier.

Viewed
- Dev Tools
- Beginner
36 min
Workshop
Entity Framework Data Concurrency

In this workshop, you'll learn about data concurrency and how to implement optimistic data concurrency controls using Entity Framework.

Viewed
- C#
- Intermediate
5 min
Practice
Practice Including PHP with HTML

Practice using PHP to include variables, files and dates within an HTML page.

Viewed
- PHP
- Beginner
5 min
Practice
Practice PHP if/else Statements

Practice using if, else and elseif statements to control the flow of your application.

Viewed
- PHP
- Beginner
4 min
Practice
Practice PHP String Manipulation

Practice creating, manipulating and outputting string variables in PHP.

Viewed
- PHP
- Beginner
5 min
Practice
Practice PHP Number Variables

Practice creating, manipulating and outputting numeric variables including integers and floats.

Viewed
- PHP
- Beginner
6 min
Practice
Practice Ruby Numeric Types

Let's practice some basic Ruby to make sure that everything you've learned so far sticks. We'll review numeric types such as Fixnum and Float, as well as math operations.

Viewed
- Ruby
- Beginner
- 1
- 2
48 min
Course
Introduction to Data Security

Keeping data and communications secure is one of the most important topics in development today. In this course, we'll look at common methods of protecting both of these areas.
- Security
- Beginner
- 1
- 2
83 min
Course
Extending Object-Oriented PHP

You should already be familiar with writing simple classes in PHP. In this course you will learn how extend the use of these classes to reuse code.
- PHP
- Intermediate
4 min
Practice
Practice Ruby Methods

Let's practice some basic Ruby to make sure that everything you've learned so far sticks. We'll review how to define and call Ruby methods.

Viewed
- Ruby
- Beginner
14 min
Workshop
Introducing Microsoft Excel

Take a quick tour of this popular spreadsheet software.

Viewed
- Data Analysis
- Beginner
3 min
Practice
Practice Strings in Ruby

Let's practice some basic Ruby to make sure that everything you've learned so far sticks. We'll review single and double-quoted strings, as well as escape sequences.

Viewed
- Ruby
- Beginner
- 1
- 2
- 3
- 4
2 hours
Course
Entity Framework with ASP.NET MVC

In Entity Framework Basics, you learned how to use Entity Framework to persist data to a database within the context of a console application. In this course, you'll learn how to use Entity Framework within the Comic Book Library Manager web app—a web application developed using the ASP.NET MVC web framework. You'll work on completing this web app so that users can create, update, and delete comic books from their digital library. Throughout this course you'll learn by example by completing hands-on coding exercises. See how to put EF related code into its own class library project, retrieve and persist data from within a web app, organize your data access code using popular design patterns, and more!
- C#
- Intermediate
4 min
Practice
Practice Basic Math Calculations in Python

Let's practice doing math and type conversions!

Viewed
- Python
- Beginner
4 min
Practice
Practice Input and Output in Java

In this Practice Session we will work with I/O in Java.

Viewed
- Java
- Beginner
3 min
Practice
Practice Using Strings and Lists in Python

Practice creating basic strings and lists in Python. Use Python's multiplication abilities to save yourself some work!

Viewed
- Python
- Beginner
- 1
- 2
- 3
76 min
Course
React Router 4 Basics

Learn to use React Router v4, a declarative routing solution for React, to manage navigation and rendering of components in your applications.
- JavaScript
- Intermediate
5 min
Practice
Practice with Views in Android

In this workshop you're tasked with creating a counter app!

Viewed
- Android
- Beginner
8 min
Practice
Practice JavaScript Math Methods

Practice using JavaScript's math methods to add, subtract, multiply, divide, as well as to convert strings to numbers.

Viewed
- JavaScript
- Beginner
7 min
Practice
Practice If and Else If Statements in JavaScript

Practice simple conditional statements in JavaScript.

Viewed
- JavaScript
- Beginner
7 min
Practice
Practice Basic JavaScript Functions

Practice creating basic JavaScript functions, adding parameters, calling functions and passing values.

Viewed
- JavaScript
- Beginner
7 min
Practice
Practice Input and Output in Ruby

Let's practice some basic Ruby to make sure that everything you've learned so far sticks. We'll review variables, as well as simple input and output.

Viewed
- Ruby
- Beginner
6 min
Practice
Practice Simple WHERE Clauses with SQL

In this workshop we'll practice simple WHERE clauses.

Viewed
- Databases
- Beginner
21 min
Bonus Series
How To Learn

Learning can be challenging. But having the proper mindset and a good set of strategies for studying and practice can help you learn faster and better. In this series of videos learn helpful techniques to boost your learning, and discover what the latest scientific research has to tell us about how to learn.

Viewed
- Learning Resources
4 min
Practice
Practice Column Selection and Aliasing with SQL

In this practice session we'll cover selecting columns and aliasing them.

Viewed
- Databases
- Beginner
10 min
Workshop
Code Coverage with Istanbul

Code coverage is the development practice in seeing how much of your code is covered by tests. We'll use the Node.js module Istanbul in this workshop to illustrate code coverage in Node.js projects.

Viewed
- Courses Plus
- JavaScript
- Intermediate
- 1
- 2
- 3
105 min
Course
Introduction to Scala

The name Scala derives from a combination of the words “scalable” and “language”. Scala is a functional programming language, which runs on top of the Java virtual machine and can use any Java class. Scala is well suited for distributed programming and big data. It is what Apache Spark is built in and can provide better performance when compared to Python and is much less verbose than Java. Whether you’re learning about functional programming or starting a career in big data, Scala is a great place to start.
- Java
- Intermediate
- 1
- 2
- 3
- 4
4 hours
Course
Introduction to Functional Programming

Functional Programming is an old paradigm, but one that is relatively new to the Java world. In this course we will explore how to take advantage of the power that comes with thinking declaratively.
- Java
- Intermediate
- 1
- 2
79 min
Course
HTML Video and Audio

Text and images have always been the foundation of web content, but more than ever, video and audio are also a part of that content mix. Fortunately, we can now create standards-based video and audio players that don't require the use of plugins. Adding video and audio to a webpage is almost as easy as adding an image or formatting some text.
- HTML
- Beginner
- 1
- 2
- 3
2 hours
Course
Front End Web Optimization Workflow

As more people are getting on the web every day, there is a desire for those web sites and apps to load quickly. Most users have become accustomed to better and better performance from their home computers and with more apps moving to the web, that desire for performance is still there. The fact is that slow load times cause user frustration and you lose users and possibly money. In these lessons we're going to exercise some common real-world examples of how you can make a slow web app perform better using common techniques for front-end optimization. By the end, you will have a better understanding about how web apps work, what causes performance issues and how to best address them.
- Dev Tools
- Intermediate
- 1
- 2
- 3
- 4
4 hours
Course
Sass Basics

Sass is a stylesheet language that extends CSS with features like variables, nested rules, mixins and functions, in a CSS-compatible syntax. In this course, you'll learn to use the powers of Sass to boost your front end workflow. The examples will teach you why you should use Sass in your projects. By the end, you will be writing more efficient CSS using code that is easy to read and maintain.
- CSS
- Beginner
- 1
- 2
- 3
- 4
3 hours
Course
Object-Oriented Python

Sometimes simple scripts with functions in them just aren't enough. Eventually you'll need logical models of your work and that'll lead you to creating custom classes in Python. Object-oriented programming is a large topic. It provides us some amazing tools, though, so it's one of the most beneficial things to learn about in Python. First, you'll learn how to build basic custom classes. Then, you'll expand them through inheritance. And for some extra power, you'll also learn how to take control of Python's built-in classes to make your own more powerful while doing less work. Finally, we'll put everything together into a fun game utility.
- Python
- Beginner
23 min
Workshop
Publishing an ASP.NET Core Application to Azure

In this workshop, you'll learn about Microsoft's Azure cloud computing platform and how to publish an ASP.NET Core website to an App Service instance using Visual Studio or GitHub.

Viewed
- Courses Plus
- C#
- Beginner
21 min
Workshop
Create a Media Player with MediaElement.js

MediaElement.js allows you to offer a consistent experience with audio and video across browsers. You can also customize the players to your heart's content. Let's learn how to use MediaElement.js to share audio and video with your users.

Viewed
- JavaScript
- Beginner
7 min
Practice
Practice CSS Box Model Basics

Practice working with the core components of the CSS box model.

Viewed
- CSS
- Beginner
6 min
Practice
Practice CSS Floats

Practice laying out a web page and wrapping text around elements, with CSS floats.

Viewed
- CSS
- Beginner
- 1
- 2
- 3
- 4
- 5
2 hours
Course
Spreadsheet Basics

A spreadsheet is an electronic document that arranges data in a table by using columns and rows. Among other things, spreadsheets let you store, manipulate, share and analyze data. They're used in business to help make complicated decisions like where to open a new restaurant location, where to build a wind farm, or where to expand a business' marketing efforts. Spreadsheets aren't just for business use either. A household expense spreadsheet can help you determine when you will be able to afford a new car, or take your next trip. In this course, you'll learn the basics of spreadsheets including the parts of a spreadsheet, spreadsheet vocabulary, how to import data, how to make complex calculations, how to reference data in different cells, and how to use spreadsheet functions. You'll also learn best practices for formatting spreadsheets, protecting your data, and more, all using Google Sheets, which is free and very similar to Excel. When you're done you'll have built an entire spreadsheet complete with data, complex functions and formulas and colorful and meaningful formatting.
- Data Analysis
- Beginner
- 1
- 2
- 3
- 4
- 5
- 6
4 hours
Course
Build an Interactive Story App

In this course we will build a simple choose-your-own-adventure story app, complete with fantastic illustrations. We will model our story and introduce the Model-View-Presenter pattern, and we will learn about getting input from users, displaying images, and using more than one Activity.
- Android
- Beginner
- 1
49 min
Course
Browser Persistent Data with PHP

With smartphones, smartwatches and even smart appliances, the internet of things has brought us into a world to rival sci-fi novels. We're no longer content with a simple search. We want context. We expect our devices to know our locations, preferences, desires and goals. We expect tailored suggestions, reminders and announcements. Most of the time we don't even realize how much our devices or websites are setup to assist us until our connection is broken or we try to use a different device, and all of a sudden our history and setting aren't there and it's so much harder to do or find anything. Users have come to expect so much and it's just getting worse. So what does that mean to you as a programmer? How can you make your own applications "user aware"? It starts with data persistence.
- PHP
- Intermediate
19 min
Workshop
Create an Options Menu

An Options Menu is a great way to let your users take actions on what they see on the screen. In this workshop, we'll be taking a pre-existing app and adding an Options Menu!

Viewed
- Android
- Beginner
- 1
- 2
56 min
Course
Styles and Themes in Android

Styles and themes are used to create a consistent user interface throughout an app, in a way that allows for reuse, easy maintenance, and compatibility on older versions of Android.
- Android
- Intermediate
5 hours
Bonus Series
The Treehouse Show

The Treehouse Show is our weekly conversation with the Treehouse Community.

Viewed
- 14 topics
6 min
Practice
Practice Basic Variables, Input & Output in JavaScript

Practice creating variables, working with input and alert dialog boxes, concatenating strings and using JavaScript string methods.

Viewed
- JavaScript
- Beginner
- 1
- 2
73 min
Course
Deployment with Capistrano

Deploying a web app to a production server involves steps that you're going to need to repeat every time you release a new version, such as pulling the changes from Git and restarting your web server. Doing it manually may not seem too bad at first, but over time the potential for mistakes adds up. So in this course, we're going to show you how to automate deploys to make them fast, easy, and safe. We'll be using the Ruby community's most popular deployment framework, Capistrano.
- Courses Plus
- Ruby
- Advanced
13 min
Workshop
Loading with Loaders

Loading data in Android can be complicated, but Loaders aim to fix that!

Viewed
- Courses Plus
- Android
- Intermediate
18 min
Workshop
Build a Realtime Database App with Firebase

Ever wondered how difficult it would be to create a Twitter clone? With Firebase, it’s never been easier. The app in this workshop isn’t quite as complex as Twitter, but it does demonstrate the power of the realtime capabilities of Firebase. Join us as we create a Realtime Messaging application in just five quick videos! We’ll cover how to create a Firebase project in the Firebase Console, how to adjust Firebase read and write permissions, and how to receive realtime updates in YOUR Android applications using Firebase.

Viewed
- Android
- Intermediate
7 min
Workshop
Getting Started with Firebase

Whether you're an individual developer looking to get started with a hackathon project, or a huge team looking to add more features to your production app, Firebase has features that can greatly improve your product and make development easier. Firebase is a realtime database backend-as-a-service, meaning that you don't have to write any code to set up your backend. In this workshop, we will go over some of the key features of Firebase, talk about where Firebase could help your development team, and some of the key consideration points when you are trying to turn your ideas into a reality. We will discuss what Firebase is, how Firebase can add value to your applications, and a little bit about how it works. However, if you're already familiar with Firebase but are looking for a little added guidance on how to use it, please check out our other Firebase workshops.

Viewed
- Android
- Intermediate
- 1
- 2
- 3
- 4
- 5
- 6
2 hours
Course
Web Accessibility Compliance

Your content is clear, your images are responsive, your code is clean, and your layout flows beautifully on all the most popular devices. You think you're ready to launch, but you might have overlooked a crucial aspect of your website's development. If it's not easy for a person to access your content, regardless of the way in which they use the internet, there's still work to be done. Developing for accessibility should be part of the standard workflow, but it's often given too little attention. In this course, you’ll learn about the standards in place to guide developers in creating a web that is accessible to all users as well as techniques to help bring your projects up to those standards.
- Dev Tools
- Beginner
26 min
Workshop
Rails Servers with Unicorn and Nginx

In this workshop, we're going to show you how to set up a "reverse proxy" between your Rails app and the Internet at large. We've going to use a high-performance web server called Nginx as our reverse proxy. Nginx will also serve the static files in our app's "public/" directory, so Rails doesn't have to. We'll also set up Unicorn, an HTTP server that will manage connections to your actual Rails app. Unicorn is good for your site's stability and speed.

Viewed
- Courses Plus
- Ruby
- Advanced
9 min
Workshop
Composing Functions in Java

A powerful feature of functions is that you can compose them together to create a functional pipeline. Let's explore some use cases

Viewed
- Courses Plus
- Java
- Intermediate
- 1
- 2
101 min
Course
File Handling with PHP

PHP can do so much more than include files. In this course we'll explore reading and writing files from a directory. We'll also take advantage of built-in parsing functions for working with common file formats to read and write CSV, XML and JSON data.
- PHP
- Intermediate
39 min
Workshop
Debugging JavaScript in the Browser

JavaScript programs are mysterious and hidden realms where magic happens. This can be delightful when everything is working. During development, though, things often won't work so well, and understanding why can be hard. You need a way to dispell the fog and see everything clearly. In this workshop we'll learn how to use a tool that professionals rely on to get crucial insights into their JavaScript programs: Chrome's Developer Tools (DevTools). With DevTools, you can get amazing access to the inner workings of your program while it runs, controlling how it executes with fine-grained control. This means that once you learn the DevTools arts, you can find and fix problems in a snap! Prerequisite Course For best results, we recommend first taking the following course: * DOM Scripting By Example (https://teamtreehouse.com/library/dom-scripting-by-example)

Viewed
- JavaScript
- Beginner
5 min
Practice
Practice Media Queries

Practice writing CSS media queries by adjusting the layout of a simple web page.

Viewed
- CSS
- Beginner
5 min
Practice
Practice CSS Selectors

Practice basic CSS selectors by targeting and styling elements of a web page.

Viewed
- CSS
- Beginner
27 min
Workshop
SQL Window Functions

Window functions are a powerful SQL feature that let you compare results against other results within a query. With them, you can you can compare one row to other rows in a query to calculate each row as a percent of the total, for example, or to add a moving average to a report.

Viewed
- Courses Plus
- Databases
- Advanced
15 min
Workshop
Python Type Hinting

Pythonistas have always relied on duck typing to handle different values in variables. Starting with Python 3.0, continuing in 3.5, and wrapping up in 3.6, type hints have been added to Python. What are these strange constructs and what have they done with all the ducks?

Viewed
- Python
- Intermediate
12 min
Workshop
Rails and PostgreSQL in Production

Rails can easily be configured to work with a wide variety of other databases. One of the most popular for production use is PostgreSQL. In this workshop, we're going to cover using Postgres with your Rails app.

Viewed
- Courses Plus
- Ruby
- Advanced
14 min
Workshop
Optionals - Tips and Tricks

Java 8 introduced the concept of an Optional value to represent "no result" from methods. It is often misunderstood, let's clear things up!

Viewed
- Java
- Beginner
- 1
- 2
105 min
Course
Entity Framework Migrations

In this course, you'll learn how to use Entity Framework Code First Migrations to propagate data model changes to your database.
- C#
- Intermediate
19 min
Workshop
Install Rails in Production

Your production server is the place the public will interact with your app. Before you can deploy any apps there, you're going to need Rails installed on the server. This workshop will show you how.

Viewed
- Courses Plus
- Ruby
- Advanced
25 min
Workshop
App Deployment Accounts

When working on the public server where your users will interact with your app, you need to be careful. If you accidentally alter the wrong setting, service, or file, your app could go down. That's why it's considered best practice for your developer account to have limited access, and to create a separate deployment account with full control over the system. You can use the deployment account to set up your app and deploy new versions, and use your development account for day-to-day maintenance tasks, secure in the knowledge that making a mistake won't break everything.

Viewed
- Courses Plus
- Dev Tools
- Advanced
- 1
- 2
- 3
- 4
2 hours
Course
Unit Testing in C#

Unit testing is key to ensuring that your code works as expected. Learn how to write unit tests and perform test driven development using industry standard tools and methods.
- C#
- Intermediate
29 min
Workshop
Data Fetching in React

Learn different methods for fetching external data in React, and how to display the data in your app.

Viewed
- JavaScript
- Intermediate
7 min
Workshop
What's New in Python 3.6?

Python 3.6 was released in December, 2016 and brought with it some great new features. Let's look at a few of them in detail to see what you can start adding to your code today!

Viewed
- Python
- Beginner
23 min
Workshop
Understanding Express Middleware

Learn how Express Middleware works. We'll walk through some simple examples to start. Then we'll create a simple Express app to show middleware in context. Prerequisite Course For best results, we recommend first taking the following course: Express Basics (https://teamtreehouse.com/library/express-basics)

Viewed
- JavaScript
- Intermediate
13 min
Workshop
Debugging Node Applications with Google Chrome

Debugging Node.js is not limited to using console.log, you can use more powerful tools like Google Chrome's DevTools Inspector.

Viewed
- JavaScript
- Intermediate
10 min
Workshop
Consumer Functional Interface

Explore how to use the java.util.function.Consumer functional interface to remove some of your ceremonial legacy dances.

Viewed
- Courses Plus
- Java
- Advanced
- 1
- 2
- 3
- 4
2 hours
Course
PHP User Authentication

Learn how to implement a custom user authentication system that controls users access to web resources, using password hashing and JSON Web Tokens for security. The system lets users sign up, log in, and log out, limiting access to certain actions based on authorization.
- PHP
- Advanced
45 min
Bonus Series
Learn React Panel

James Churchill moderates a panel discussion with Jared Schaab, Joe Fraley, and Beau Palmquist on the state of React in development today. They will discuss the best ways to learn React, how its being used in both professional and personal development projects, and will give advice to students on best practices.

Viewed
- Courses Plus
- JavaScript
18 min
Workshop
Linux Servers on VirtualBox

Today we're going to show you how to set up a Linux server running as a virtual machine on your development system. (If you haven't worked with virtual machines before, think of it as a computer within a computer.) This is a great way to set up a sandbox where you can try out deploying your applications.

Viewed
- Courses Plus
- Dev Tools
- Advanced
- 1
- 2
58 min
Course
Using the GitHub API with PHP

Application Programming Interfaces, or APIs, provide a method for connecting your site to a “third-party” web service. We'll use the GitHub API to explore how RESTful APIs allow us to retrieve and update information residing on an external system.
- PHP
- Intermediate
40 min
Workshop
Custom Views in Android

In this workshop we'll learn about custom Views in Android by creating a stock chart app!

Viewed
- Courses Plus
- Android
- Intermediate
22 min
Workshop
Introducing Progressive Web Apps

Learn a new way of delivering amazing user experiences on the web with Progressive Web Apps (PWAs).

Viewed
- Courses Plus
- Dev Tools
- Intermediate
3 hours
Bonus Series
Dev Team Show

The Dev Team Show is a biweekly show released every other Thursday, where Treehouse Teacher James Churchill leads conversations about development with a guest. Each episode covers a single developer-related conversation that you and your team should be talking about.

Viewed
- Courses Plus
- Dev Tools
- 1
- 2
- 3
114 min
Course
DOM Scripting By Example

Use JavaScript to build an RSVP web application. Many of the features you'll build are common to other web applications. When you're done programing the app, you'll have the basics you will need to build any client-side web app.
- JavaScript
- Beginner
9 min
Workshop
Introducing Template Literals

Template literals offer a lot of convenience when creating strings in JavaScript. Let's look at the main features.

Viewed
- JavaScript
- Beginner
- 1
- 2
- 3
- 4
- 5
4 hours
Course
Entity Framework Basics

In this course, you'll learn how to use Microsoft's Entity Framework to persist application data to a database. By the end of the course, you'll have learned how to use the Code First workflow, create entity classes, write LINQ queries, perform CRUD operations, and more.
- C#
- Intermediate
- 1
- 2
- 3
- 4
- 5
3 hours
Course
Building Web Apps with Sinatra

Sinatra is the second-most popular web framework written in Ruby (after Rails). It's much simpler than Rails, and it's a great way to try out web development.
- Ruby
- Intermediate
32 min
Workshop
Content Providers

Learn about how to use a Content Provider to serve up data for your app!

Viewed
- Courses Plus
- Android
- Advanced
- 1
- 2
2 hours
Course
Java Objects

Java is an Object Oriented Programming language. Literally everything you interact with is an object, so understanding them is critical to your Java foundational base. In this course, we will learn how to create, use and express ideas using objects.
- Java
- Beginner
55 min
Workshop
Creating Data Structures Using C# Generics

Implementing your own data structures for organizing and working with data can be a powerful tool! To do this, we'll learn how to write generic classes and methods as well as how to implement the IEnumerable interface.

Viewed
- C#
- Intermediate
14 min
Workshop
Defining Variables with let and const

For most of JavaScript's life, there's been only one way to create, or "declare", a variable: the var keyword. In the latest version of JavaScript there are two new ways: const and let.

Viewed
- JavaScript
- Beginner
26 min
Workshop
Dependency Management with Composer

In this course we'll learn about packages, dependencies, repositories and versioning. We'll be using a PHP tool called Composer for managing all these pieces to work together with our application.

Viewed
- PHP
- Intermediate
8 min
Workshop
Deep Links

Learn about how to link from a web page directly to a specific part of your app in this workshop on deep links!

Viewed
- Courses Plus
- Android
- Advanced
8 min
Workshop
Introducing Arrow Function Syntax

ECMAScript 2015 has been widely adopted by all modern browsers. This means we can use a more concise way to write functions. In this workshop we'll convert some traditional functions into a more modern syntax.

Viewed
- JavaScript
- Beginner
12 min
Workshop
Android Permissions

This course covers the new Marshmallow permission system!

Viewed
- Android
- Beginner
28 min
Workshop
Slack Real-Time Messaging API

Slack's Real-Time Messaging API gives us a great way to build bots that interact with messages and other events from Slack channels.

Viewed
- Courses Plus
- Python
- Intermediate
39 min
Workshop
Android Widgets

Widgets let you easily share information with your users without requiring them to open your app. In this workshop we'll see how to create and manipulate widgets by creating one ourselves!

Viewed
- Android
- Beginner
16 min
Workshop
Localization in Android

Learn how to localize an app for more than one language in this super exciting workshop!

Viewed
- Courses Plus
- Android
- Beginner
30 min
Workshop
Building with Maven

Developing applications for distribution usually involves the use of a build tool. In the Java world, this is likely either Gradle or Maven. In this workshop, we'll explore the basic use of Maven as a tool to compile, test, and package your application. We'll cover the standard directory layout of a Maven project, the Project Object Model (POM), and dependency management with Maven.

Viewed
- Java
- Beginner
44 min
Workshop
C# Extension Methods

C# extension methods allow us to add methods to any type without altering the code of that type.

Viewed
- C#
- Beginner
18 min
Workshop
Basic Exception Handling with PHP

Exceptions are the object-oriented approach to handling errors. An exception is an object that is “thrown” by your application in the event that something goes wrong. They allow you to customize how a program handles errors, and gracefully degrades an application.

Viewed
- PHP
- Intermediate
39 min
Workshop
Getting Started with ASP.NET Core

ASP.NET Core (previously known as ASP.NET 5) is a new open-source (github.com/aspnet/home (https://github.com/aspnet/home)) and cross-platform framework for building modern web apps using .NET. It is a significant redesign of ASP.NET, built from the ground up to provide an optimized development framework for apps that are either deployed to the cloud or run on-premises. You can develop and run your ASP.NET Core apps cross-platform on Windows, Linux, and macOS. In this workshop, we'll answer the question "What is ASP.NET Core?", explore the .NET CLI, and create a simple app–from the command line and using Visual Studio. Along the way, we'll also take a look at some of the key new concepts and features that are part of ASP.NET Core.

Viewed
- Courses Plus
- C#
- Intermediate

Welcome to the Treehouse Library

Ready to start learning?

Full-Stack JavaScript Techdegree Portfolio Overview

Gulpfile Setup

JavaScript Tip Calculator Overview

Build a Chatbot with Watson APIs

Practice Setting Up a Python Project

Practice Error Handling

Computer Fundamentals (Windows)

Computer Fundamentals (Mac)

Practice Cleaning Data

Practice Emulating Built-ins

Practice OOP Vocabulary

Node.js Basics

Dunder Main

Intro to Seaborn

Data from APIs

npm Basics

Preparing Data for Analysis

Relational Databases With SQLAlchemy

UX Design Patterns

JavaScript and the DOM

Interacting with the DOM

Treehouse Guest Speaker Series

Data Visualization with Google Sheets

Automate Your Work with Zapier

Presenting An Analysis

Treehouse Festival June 2021

Practice Data Visualization

Intermediate Spreadsheets

Python Sets

Practice the CSS Box Model

Practice Enhancing Design with CSS

Practice CSS Media Queries

Practice CSS Length Units

Data Visualization Foundations

Combining Data for Analysis

Important Skills for Professional Success

Careers in the Tech Industry

Introducing Coda

Learning with Coda

String Manipulation with JavaScript

Introduction to New Relic

Why We Exist: Our Mission

Treehouse Live

How To Use Treehouse

Hello Computer Science

Hello UX

Hello Front-End Web Development (FEWD)

Hello Full Stack JavaScript

Hello Python

Technical Interview Prep: Python Basics

Basic Statistics for Data Analysis

Analyzing Books with Pandas

Hour With a Tech Recruiter

Flask with SQLAlchemy Basics

SQLAlchemy Basics

Treehouse Festival December 2020

Mobile-First CSS Layout

Using Local Storage With JavaScript

Enhancing Design with CSS

CSS Layout

CSS Basics

How to Have 1:1's

SVG Workflow and Tools

Practice Hooks in React

Collaborating with Developers

Technical Interviewing

Basic Object-Oriented Python

Structuring Your JavaScript Code

How to Land Your Dream Job

Intro to Design Thinking

Basic Math for Data Analysis

Ethical Design

Responsive Design

Sequelize Model Validation

Treehouse Student Orientation

Accessibility For Web Developers

Intro to Gender & Sexuality

REST API Validation with Express