Achievement

Gotchas and Wins

Java Arrays

Achievement

Iteration

Java Arrays

Achievement

Captioning Video

HTML Video and Audio

Achievement

Media Basics

HTML Video and Audio

Achievement

Going Further with HTML

HTML Basics

Achievement

Images, Text and Links

HTML Basics

Achievement

Structuring Your Content

HTML Basics

Achievement

Creating an SVG

SVG Basics

Achievement

Introduction to SVG

SVG Basics

Achievement

JavaScript Tools and Workflows

The Landscape of JavaScript

Achievement

JavaScript is Everywhere

The Landscape of JavaScript

Achievement

Delivering the MVP

Java Objects

Achievement

Creation

Java Arrays

Achievement

Creating the MVP

Java Objects

Achievement

Creating Spring Controllers and Thymeleaf Views

Spring Basics

Achievement

Spring Components and Configuring Our App

Spring Basics

Achievement

Setting Up Your Local Environment for Spring Development

Spring Basics

Achievement

Callbacks with Timers

Callback Functions in JavaScript

Achievement

Introduction to Callback Functions

Callback Functions in JavaScript

Achievement

Improving the Application Code

DOM Scripting By Example

Achievement

Editing and Filtering Names

DOM Scripting By Example

Achievement

Adding and Removing Names

DOM Scripting By Example

Achievement

Traversing the DOM

JavaScript and the DOM (Retiring)

Achievement

Responding to User Interaction

Interacting with the DOM

Achievement

Creating a Command Line Weather Application

Node.js Basics 2017

Achievement

Handling Errors in Node

Node.js Basics 2017

Achievement

Getting Data From an API With Node

Node.js Basics 2017

Achievement

Introduction to Node.js

Node.js Basics 2017

Achievement

Making Changes to the DOM

JavaScript and the DOM (Retiring)

Achievement

Getting a Handle on the DOM

JavaScript and the DOM (Retiring)

Achievement

The Browser Environment

JavaScript and the DOM (Retiring)

Achievement

Create Function Using Arrow Syntax

Getting Started With ES2015

Achievement

Using Template Literals

Getting Started With ES2015

Achievement

Defining Variables With let and const

Getting Started With ES2015

Achievement

Finishing the Game

Introducing JavaScript

Achievement

Introducing JavaScript

Introducing JavaScript

Achievement

Views

ASP.NET MVC Basics

Achievement

Controllers

ASP.NET MVC Basics

Achievement

Project Setup

ASP.NET MVC Basics

Achievement

Getting Started With HTML

HTML Basics

Achievement

Polymorphism

Intermediate C#

Achievement

GET and POST Requests in a Browser

HTTP Basics

Achievement

Harnessing the Power of Objects

Java Objects

Achievement

Meet Objects

Java Objects

Achievement

Introduction to HTTP

HTTP Basics

Achievement

Bokeh Data

Data Visualization with Bokeh

Achievement

Adding a New Web Page

Introduction to HTML and CSS (2016)

Achievement

Make It Beautiful with CSS

Introduction to HTML and CSS (2016)

Achievement

HTML: The Structural Foundation of Web Pages and Applications

Introduction to HTML and CSS (2016)

Achievement

Getting Familiar with HTML and CSS

Introduction to HTML and CSS (2016)

Achievement

Day 3: Getting Creative

SQL Reporting by Example

Achievement

Day 2: Advanced Selecting

SQL Reporting by Example

Achievement

Day 1: Joining Tables

SQL Reporting by Example

Achievement

Orientation: Selecting Data

SQL Reporting by Example

Achievement

Subqueries

Querying Relational Databases

Achievement

Set Operations

Querying Relational Databases

Achievement

Joining Table Data with SQL

Querying Relational Databases

Achievement

Table Relationships

Querying Relational Databases

Achievement

Database Keys

Querying Relational Databases

Achievement

Database Normalization

Querying Relational Databases

Achievement

Pickups

How to Make a Video Game

Achievement

Loops and Final Touches

C# Objects

Achievement

Encapsulation with Properties

C# Objects

Achievement

Encapsulation and Arrays

C# Objects

Achievement

Player Input and Cameras

How to Make a Video Game

Achievement

The Unity Editor and Scene Setup

How to Make a Video Game

Achievement

Introduction to Video Games

How to Make a Video Game

Achievement

Inheritance

C# Objects

Achievement

Methods

C# Objects

Achievement

Object-Oriented Programming

C# Objects

Achievement

Introducing jQuery Plugins

Using jQuery Plugins

Achievement

Test Time!

Django Basics

Achievement

Final Details

Django Basics

Achievement

Django Templates

Django Basics

Achievement

Creating Reports

Data Science Basics

Achievement

Charts and Tables

Data Science Basics

Achievement

Exporting

Data Science Basics

Achievement

Cleaning Data

Data Science Basics

Achievement

Model Administration

Django Basics

Achievement

What a View

Django Basics

Achievement

Say Hello to Django

Django Basics

Achievement

Describing Data

Data Science Basics

Achievement

Getting Started with Data Science

Data Science Basics

Achievement

Tacocat Challenge

Build a Social Network with Flask

Achievement

How to Win Friends

Build a Social Network with Flask

Achievement

Broadcasting

Build a Social Network with Flask

Achievement

Takin' Names

Build a Social Network with Flask

Achievement

Making Strong Users

Build a Social Network with Flask

Achievement

Character Builder

Flask Basics

Achievement

Flask Templates

Flask Basics

Achievement

Welcome to Flask

Flask Basics

Achievement

The Lambda Lambada

Functional Python

Achievement

Functional Workhorses

Functional Python

Achievement

Functional Rules

Functional Python

Achievement

Timezones

Dates and Times in Python (2014)

Achievement

Math Quiz App

Dates and Times in Python (2014)

Achievement

Covering Your Bases

Python Testing

Achievement

Be Assertive!

Python Testing

Achievement

What Is Testing?

Python Testing

Achievement

Python Regular Expressions

Regular Expressions in Python

Achievement

Gettin' CRUD-y With It

Using Databases in Python

Achievement

Our Diary App

Using Databases in Python

Achievement

Meet Peewee

Using Databases in Python

Achievement

Go Further With Mongo

Mongo Basics

Achievement

Working With Collections

Mongo Basics

Achievement

Understanding MongoDB

Mongo Basics

Achievement

Getting Started with MongoDB

Mongo Basics

Achievement

Dates and Times

Dates and Times in Python (2014)

Achievement

Date and Time Functions

Reporting with SQL

Achievement

Aggregate and Numeric Functions

Reporting with SQL

Achievement

Working with Text

Reporting with SQL

Achievement

Ordering, Limiting and Paging Results

Reporting with SQL

Achievement

Handling Errors When Manipulating Data

Modifying Data with SQL

Achievement

Deleting Data from a Database

Modifying Data with SQL

Achievement

Updating Data in a Database

Modifying Data with SQL

Achievement

Adding Data to a Database

Modifying Data with SQL

Achievement

Finding the Data You Want

SQL Basics

Achievement

Getting Data from a Database

SQL Basics

Achievement

Data, Databases and SQL

SQL Basics

Achievement

Adding Play Services to Your App

Google Play Services

Achievement

Publishing on Google Play

Publish an Android App

Achievement

The Project

Android Activity Lifecycle

Achievement

Introducing SharedPreferences

Android Activity Lifecycle

Achievement

The Activity Lifecycle

Android Activity Lifecycle

Achievement

Acting on List Item Taps

Android Lists and Adapters (2015)

Achievement

Lists with RecyclerViews

Android Lists and Adapters (2015)

Achievement

Using Parcelable Data

Android Lists and Adapters (2015)

Achievement

Custom ListViews

Android Lists and Adapters (2015)

Achievement

Standard ListViews

Android Lists and Adapters (2015)

Achievement

Updating the Data Model

Android Lists and Adapters (2015)

Achievement

Hooking up the Model to the View

Build a Weather App (2015)

Achievement

Building the Weather UI

Build a Weather App (2015)

Achievement

Working with JSON

Build a Weather App (2015)

Achievement

Concurrency and Error Handling

Build a Weather App (2015)

Achievement

Password Resets and Testing

User Authentication with Rails

Achievement

Adding User Support to Our Application

User Authentication with Rails

Achievement

Password Hashing and Sign-In

User Authentication with Rails

Achievement

AR Extensions

ActiveRecord Basics

Achievement

Callbacks

ActiveRecord Basics

Achievement

Query Interface

ActiveRecord Basics

Achievement

Validation

ActiveRecord Basics

Achievement

Migrations and Relationships

ActiveRecord Basics

Achievement

Introduction to ActiveRecord

ActiveRecord Basics

Achievement

Build a Todo List Application with Rails 4

Build a Todo List Application with Rails 4

Achievement

Database Security

PHP & Databases with PDO

Achievement

Queries & Results

PHP & Databases with PDO

Achievement

Getting Started with PDO

PHP & Databases with PDO

Achievement

Securing and Maintaining a MySQL Database

Database Foundations

Achievement

SQL Calculating, Aggregating and Other Functions

Database Foundations

Achievement

Joining Relational Data Between Tables in SQL

Database Foundations

Achievement

Manipulating Schema with SQL

Database Foundations

Achievement

Creating Tables and Manipulating Data with SQL

Database Foundations

Achievement

Reading Data from Databases with SQL

Database Foundations

Achievement

Installing MySQL Server and MySQL Workbench

Database Foundations

Achievement

Contact Forms & Mailers

Building Websites with PHP

Achievement

Slim and Templates

Building Websites with PHP

Achievement

Dependency Management

Building Websites with PHP

Achievement

Perfect

C# Basics (Retired)

Achievement

Perform

C# Basics (Retired)

Achievement

Console I/O

C# Basics (Retired)

Achievement

Discovery

How to Start a Business

Achievement

PHP Inheritance & Interfaces

Object-Oriented PHP Basics (Retired)

Achievement

PHP Properties & Methods

Object-Oriented PHP Basics (Retired)

Achievement

PHP Objects and Classes

Object-Oriented PHP Basics (Retired)

Achievement

PHP Internal Functions

PHP Functions

Achievement

PHP Returns & Closures

PHP Functions

Achievement

PHP Functions Basics

PHP Functions

Achievement

PHP Loops

PHP Basics (Retired)

Achievement

PHP Conditionals

PHP Basics (Retired)

Achievement

PHP Datatypes

PHP Basics (Retired)

Achievement

PHP Data & Structure

PHP Basics (Retired)

Achievement

PHP Getting Started

PHP Basics (Retired)

Achievement

Dungeon Game

Python Collections (Retired)

Achievement

Tuples

Python Collections (Retired)

Achievement

Installing a Ruby Development Environment

Installing a Ruby Development Environment

Achievement

MASH JavaScript

Treehouse Club - MASH

Achievement

MASH CSS

Treehouse Club - MASH

Achievement

MASH HTML

Treehouse Club - MASH

Achievement

Treehouse Club - JavaScript

Treehouse Club: JavaScript

Achievement

Treehouse Club - CSS

Treehouse Club: CSS

Achievement

WWW

How the Web Works

Achievement

The Internet

How the Internet Works

Achievement

Computer Languages

Computer Basics

Achievement

Computer Basics

Computer Basics

Achievement

Dictionaries

Python Collections (Retired)

Achievement

Slices

Python Collections (Retired)

Achievement

Lists Redux

Python Collections (Retired)

Achievement

Buggy Logs

Write Better Python

Achievement

Cleaner Code

Write Better Python

Achievement

Local Python

Setting Up a Local Python Environment

Achievement

Hack-n-Slash

Object-Oriented Python (retired)

Achievement

Python Inheritance

Object-Oriented Python (retired)

Achievement

Python Objects

Object-Oriented Python (retired)

Achievement

Letter Game App

Python Basics (2015)

Achievement

Number Game App

Python Basics (2015)

Achievement

Shopping List App

Python Basics (2015)

Achievement

Logic in Python

Python Basics (2015)

Achievement

Python Data Types

Python Basics (2015)

Achievement

Python For Beginners

Python Basics (2015)

Achievement

Networking

Build a Weather App (2015)

Achievement

Exploring an API

Build a Weather App (2015)

Achievement

Testing and Debugging

Build a Simple Android App (2014)

Achievement

Improving Our Code

Build a Simple Android App (2014)

Achievement

Coding the Fun Facts

Build a Simple Android App (2014)

Achievement

Basic Android Programming

Build a Simple Android App (2014)

Achievement

Creating the Initial Screen Layout

Build a Simple Android App (2014)

Achievement

Finishing the User Interface

Build an Interactive Story App (Retired)

Achievement

The Model-View-Controller Pattern

Build an Interactive Story App (Retired)

Achievement

Intents and Multiple Activities

Build an Interactive Story App (Retired)

Achievement

User Input

Build an Interactive Story App (Retired)

Achievement

Testing and Debugging

Build a Simple Android App

Achievement

Improving Our Code

Build a Simple Android App

Achievement

Basic Android Programming

Build a Simple Android App

Achievement

Creating the Screen Layout

Build a Simple Android App

Achievement

Getting Started with Android

Build a Simple Android App

Achievement

Save for the Web

Adobe Illustrator for Web Design

Achievement

Adding Images and a Mockup

Adobe Illustrator for Web Design

Achievement

Logo Design

Adobe Illustrator for Web Design

Achievement

Creating a Wireframe

Adobe Illustrator for Web Design

Achievement

Introducing Adobe Illustrator

Adobe Illustrator for Web Design

Achievement

Advanced Sass Concepts

Sass Basics (retired)

Achievement

Speeding up Workflow With Sass

Sass Basics (retired)

Achievement

Variables, Mixins, and Extending Selectors

Sass Basics (retired)

Achievement

Getting Started with Sass

Sass Basics (retired)

Achievement

Building a Layout with Flexbox

CSS Flexbox Layout

Achievement

Flexbox Properties

CSS Flexbox Layout

Achievement

Understanding Flexbox

CSS Flexbox Layout

Achievement

Positioning Page Content

CSS Layout Basics

Achievement

CSS Layout Project

CSS Layout Basics

Achievement

Page Layout with the Float Property

CSS Layout Basics

Achievement

Controlling Layout with CSS Display Modes

CSS Layout Basics

Achievement

What to Test

Unit Testing in Java

Achievement

How To Test

Unit Testing in Java

Achievement

Why Test

Unit Testing in Java

Achievement

Writing Your Own Java Annotation

Java Annotations

Achievement

Using Java's Built-In Annotations

Java Annotations

Achievement

Getting Started with Android

Build a Simple Android App (2014)

Achievement

Event Planning

Build a JavaFX Application

Achievement

Build a Pomodoro App

Build a JavaFX Application

Achievement

Design a Better App

Build a JavaFX Application

Achievement

Graphical User Interfaces

Build a JavaFX Application

Achievement

Advanced Tooling

Local Development Environments

Achievement

IDE Exploration

Local Development Environments

Achievement

How it Works

Local Development Environments

Achievement

Efficiency!

Java Data Structures - Retired

Achievement

Exploring the Java Collections Framework

Java Data Structures - Retired

Achievement

Organizing Data

Java Data Structures - Retired

Achievement

Getting There

Java Data Structures - Retired

Achievement

Getting Started with CSS Layout

CSS Layout Basics

Achievement

Delivering the MVP

Java Objects (Retired)

Achievement

Workflow Basics

Photoshop Foundations

Achievement

Slices & Save for Web

Photoshop Foundations

Achievement

Vector Shapes

Photoshop Foundations

Achievement

Type Tools

Photoshop Foundations

Achievement

Masks Basics

Photoshop Foundations

Achievement

Creating the MVP

Java Objects (Retired)

Achievement

Harnessing the Power of Objects

Java Objects (Retired)

Achievement

Meet Objects

Java Objects (Retired)

Achievement

Perfecting the Prototype

Java Basics

Achievement

Using your New Tools

Java Basics

Achievement

Getting Started with Java

Java Basics

Achievement

WordPress Admin Settings

WordPress Admin Settings

Achievement

Prepare and Plan

C# Basics (Retired)

Achievement

Gems In Depth

Ruby Gems

Achievement

Ruby Gems

Ruby Gems

Achievement

Ruby Standard Library: Part 2

Ruby Core and Standard Library

Achievement

Ruby Standard Library: Part 1

Ruby Core and Standard Library

Achievement

Ruby Core

Ruby Core and Standard Library

Achievement

Store Inventory Using Modules

Ruby Modules

Achievement

Include and Extend

Ruby Modules

Achievement

Ruby Core Modules

Ruby Modules

Achievement

Ruby Module Basics

Ruby Modules

Achievement

Input and Output

Build an Address Book in Ruby

Achievement

Search

Build an Address Book in Ruby

Achievement

Ruby Class Design

Build an Address Book in Ruby

Achievement

Blocks Practice

Ruby Blocks

Achievement

Working With Blocks

Ruby Blocks

Achievement

Ruby Blocks

Ruby Blocks

Achievement

Build a Simple Todo List Program

Ruby Booleans

Achievement

Ruby Booleans

Ruby Booleans

Achievement

Build a Bank Account Class

Ruby Objects and Classes

Achievement

Ruby Variables and Methods

Ruby Objects and Classes

Achievement

Ruby Objects and Classes

Ruby Objects and Classes

Achievement

Build a Simple Contact List

Ruby Loops

Achievement

Ruby Iteration

Ruby Loops

Achievement

Ruby Loops

Ruby Loops

Achievement

Build a Grocery List Program

Ruby Collections

Achievement

Ruby Hashes

Ruby Collections

Achievement

Ruby Arrays

Ruby Collections

Achievement

Ruby Logical Operators

Ruby Operators and Control Structures

Achievement

Ruby Control Structures

Ruby Operators and Control Structures

Achievement

Ruby Operators

Ruby Operators and Control Structures

Achievement

Ruby Methods

Ruby Basics (Retired)

Achievement

Ruby Numbers (Ruby Basics)

Ruby Basics (Retired)

Achievement

Ruby Strings (Ruby Basics)

Ruby Basics (Retired)

Achievement

How Ruby Works

Ruby Basics (Retired)

Achievement

Owning a WordPress Site Long Term

WordPress for Website Owners

Achievement

WordPress Community Management

WordPress for Website Owners

Achievement

Working with Media in WordPress

WordPress for Website Owners

Achievement

Adding and Editing Content

WordPress for Website Owners

Achievement

Getting a WordPress Site

WordPress for Website Owners

Achievement

WordPress User Roles

WordPress User Roles

Achievement

How to Install WordPress on Your Computer

How to Install WordPress on Your Computer

Achievement

What is npm?

npm Basics (retiring)

Achievement

Introduction to SEO

SEO Basics

Achievement

Say Hello to Python

Python Basics (Retired)

Achievement

Layer Basics

Photoshop Foundations

Achievement

Workspace Basics

Photoshop Foundations

Achievement

Display Modes

CSS Layout Techniques

Achievement

Advanced Selectors

CSS Selectors

Achievement

Going Further with Attribute Selectors and Pseudo-Classes

CSS Selectors

Achievement

Selectors - Beyond the Basics

CSS Selectors

Achievement

Moving Forward with UX

UX Basics

Achievement

Tools UXers Use

UX Basics

Achievement

How UXers Think

UX Basics

Achievement

What Do User Experience Designers Do?

UX Basics

Achievement

What is User Experience (UX)?

UX Basics

Achievement

Finalizing the Project

Brand Identity Basics

Achievement

Case Studies and Examples

Brand Identity Basics

Achievement

The Brand Identity Design Process

Brand Identity Basics

Achievement

Introduction to Brand Identity

Brand Identity Basics

Achievement

The Logo Sprint

Logo Design Basics

Achievement

Logo Design 101

Logo Design Basics

Achievement

Design Foundations Final

Design Foundations

Achievement

Becoming a Problem Solver

Design Foundations

Achievement

Forms

HTML

Achievement

Tables

HTML

Achievement

Objects

HTML

Achievement

Links

HTML

Achievement

Lists

HTML

Achievement

Text

HTML

Achievement

Introduction

HTML

Achievement

Welcome to the Treehouse Club

Treehouse Club: HTML

Achievement

AJAX and APIs

AJAX Basics (retiring)

Achievement

jQuery and AJAX

AJAX Basics (retiring)

Achievement

Combine and Minify Assets

Introduction to Front End Performance Optimization

Achievement

Optimize Assets

Introduction to Front End Performance Optimization

Achievement

Measuring Performance

Introduction to Front End Performance Optimization

Achievement

Planning for Performance

Introduction to Front End Performance Optimization

Achievement

Programming AJAX

AJAX Basics (retiring)

Achievement

AJAX Concepts

AJAX Basics (retiring)

Achievement

Workflows

Git Basics

Achievement

Working With Remote Repositories

Git Basics

Achievement

Merging

Git Basics

Achievement

Branches

Git Basics

Achievement

Getting Started With Git

Git Basics

Achievement

Why Version Control Matters

Git Basics

Achievement

Quiz Practice Project

Object-Oriented JavaScript (2015)

Achievement

Prototypal Inheritance

Object-Oriented JavaScript (2015)

Achievement

Constructor Functions & Prototypes

Object-Oriented JavaScript (2015)

Achievement

Introduction to Methods

Object-Oriented JavaScript (2015)

Achievement

Understanding Aesthetics

Design Foundations

Achievement

Introduction to Design

Design Foundations

Achievement

Web Apps

Accessibility

Achievement

Websites

Accessibility

Achievement

Introduction

Accessibility

Achievement

Responsive Patterns

Responsive Layouts

Achievement

Media Queries

Responsive Layouts

Achievement

Responsive Theory

Responsive Layouts

Achievement

Custom Media Players

HTML Video and Audio (Retired)

Achievement

Captioning Video

HTML Video and Audio (Retired)

Achievement

Media Basics

HTML Video and Audio (Retired)

Achievement

Traversing and Manipulating the DOM with JavaScript

Interactive Web Pages with JavaScript

Achievement

Selecting Elements and Adding Events with JavaScript

Interactive Web Pages with JavaScript

Achievement

JavaScript and the DOM

Interactive Web Pages with JavaScript

Achievement

Creating a Simple Drawing Application

jQuery Basics (2014)

Achievement

Creating a Password Confirmation Form

jQuery Basics (2014)

Achievement

Chrome DevTools Basics

Website Optimization

Achievement

Introduction to Data, Databases and SQL

Database Foundations

Achievement

Creating a Mobile Drop Down Menu

jQuery Basics (2014)

Achievement

Structuring Tables

HTML Tables

Achievement

Table Basics

HTML Tables

Achievement

Installing Programs

Console Foundations

Achievement

Environment and Redirection

Console Foundations

Achievement

Console Processes

Console Foundations

Achievement

Console Users and Permission

Console Foundations

Achievement

Moving Around in the Console

Console Foundations

Achievement

Creating a Simple Lightbox

jQuery Basics (2014)

Achievement

Creating a Spoiler Revealer

jQuery Basics (2014)

Achievement

Introduction to jQuery

jQuery Basics (2014)

Achievement

JavaScript Objects

JavaScript Loops, Arrays and Objects

Achievement

JavaScript Arrays

JavaScript Loops, Arrays and Objects

Achievement

JavaScript Loops

JavaScript Loops, Arrays and Objects

Achievement

Getting Started with WordPress

Getting Started with WordPress

Achievement

Choosing Options

HTML Forms

Achievement

Organizing Forms

HTML Forms

Achievement

Form Basics

HTML Forms

Achievement

JavaScript Functions

JavaScript Basics (Retired)

Achievement

JavaScript Conditional Statements

JavaScript Basics (Retired)

Achievement

JavaScript Numbers

JavaScript Basics (Retired)

Achievement

JavaScript Variables

JavaScript Basics (Retired)

Achievement

Introducing JavaScript

JavaScript Basics (Retired)

Achievement

Fundamental Concepts

CSS Basics (2014)

Achievement

Designing with the Latest Features

CSS Basics (2014)

Achievement

Basic Layout

CSS Basics (2014)

Achievement

The Box Model

CSS Basics (2014)

Achievement

Understanding Values and Units

CSS Basics (2014)

Achievement

Basic Selectors

CSS Basics (2014)

Achievement

Getting Started with CSS

CSS Basics (2014)

Achievement

Debugging HTML and CSS Problems

How to Make a Website

Achievement

Sharing a Website

How to Make a Website

Achievement

Responsive Web Design and Testing

How to Make a Website

Achievement

Adding Pages to a Website

How to Make a Website

Achievement

Styling Web Pages and Navigation

How to Make a Website

Achievement

Customizing Colors and Fonts

How to Make a Website

Achievement

CSS: Cascading Style Sheets

How to Make a Website

Achievement

Creating HTML Content

How to Make a Website

Achievement

HTML First

How to Make a Website

Achievement

Beginning HTML and CSS

How to Make a Website

Achievement

Newbie