Achievement

Setting Your Course

Careers Foundations

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Careers in the Tech Industry

Careers Foundations

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JavaScript Tools and Workflows

The Landscape of JavaScript

Achievement

JavaScript is Everywhere

The Landscape of JavaScript

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Controllers and Scope

AngularJS Basics (1.x)

Achievement

Getting Started with Angular

AngularJS Basics (1.x)

Achievement

Using Associations in Your App

Active Record Associations in Rails

Achievement

PHP Includes

Build a Basic PHP Website (2018)

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Sorting Algorithms

Algorithms: Sorting and Searching

Achievement

Searching Names

Algorithms: Sorting and Searching

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Merge Sort and Linked Lists

Introduction to Data Structures

Achievement

Building Constructor Methods and Generating Objects

Object-Oriented JavaScript: Challenge

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Introducing 'Four in a Row'

Object-Oriented JavaScript: Challenge

Achievement

Creating Flexible Objects Using Protocols

Protocols in Swift

Achievement

Getters and Setters

Object-Oriented JavaScript

Achievement

Working with Classes in JavaScript

Object-Oriented JavaScript

Achievement

Object Basics

Object-Oriented JavaScript

Achievement

Java's Functional Toolset

Introduction to Functional Programming

Achievement

Introduction to Object-Oriented JavaScript

Object-Oriented JavaScript

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The Merge Sort Algorithm

Introduction to Data Structures

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Building a Linked List

Introduction to Data Structures

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Exploring Arrays

Introduction to Data Structures

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Project Setup

Entity Framework with ASP.NET MVC

Achievement

Query Builder

Querying With LINQ

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Query Operators

Querying With LINQ

Achievement

Functional!

Querying With LINQ

Achievement

Adding a List Page

ASP.NET MVC Basics

Achievement

Modeling and Presenting Data

ASP.NET MVC Basics

Achievement

Now You're Querying!

Querying With LINQ

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Views

ASP.NET MVC Basics

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S3 Storage Service

AWS with S3

Achievement

AWS and "The Cloud"

AWS with S3

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UI Testing with Espresso

Testing in Android

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Unit Testing - Now Featuring Robolectric!

Testing in Android

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Unit Testing

Testing in Android

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Ordering, Limiting and Paging Results

Reporting with SQL

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Vulnerabilities: Configuration, Components, and Logging

OWASP Top 10 Vulnerabilities

Achievement

Vulnerabilities: Authentication, Access, and Sensitive Data

OWASP Top 10 Vulnerabilities

Achievement

Vulnerabilities: Injection, XSS, CSRF

OWASP Top 10 Vulnerabilities

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The OWASP Top 10 Explained

OWASP Top 10 Vulnerabilities

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Recursion and Space Complexity

Introduction to Algorithms

Achievement

Algorithms in Code

Introduction to Algorithms

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Introducing Vue

Vue.js Basics

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Time Complexity

Introduction to Algorithms

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Playing a Counting Game

Introduction to Algorithms

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The Activity Lifecycle

Android Activity Lifecycle

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Connect the Data

Android Lists and Adapters

Achievement

Adapters and ViewHolders

Android Lists and Adapters

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Displaying Lists of Data

Android Lists and Adapters

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Updating the Data Model

Android Lists and Adapters

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Publishing on Google Play

Publish an Android App

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Hooking Up the Model to the View

Build a Weather App

Achievement

Building the Weather UI

Build a Weather App

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Working with JSON

Build a Weather App

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Concurrency and Error Handling

Build a Weather App

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Networking

Build a Weather App

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Protocol Basics

Protocols in Swift

Achievement

Objects and Optionals

Enumerations and Optionals in Swift

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Introduction to Optionals

Enumerations and Optionals in Swift

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Introduction to Enumerations

Enumerations and Optionals in Swift

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Exploring an API

Build a Weather App

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Active Record Associations

Active Record Associations in Rails

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Persuasive Patterns

UX Design Patterns

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UI Patterns

UX Design Patterns

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Designing with Patterns

UX Design Patterns

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Spring Components and Configuring Our App

Spring Basics

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Improving Usability

Usability Foundations

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Mobile Usability

Usability Foundations

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Website Usability

Usability Foundations

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What is Usability?

Usability Foundations

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Python: Inheritance

Object-Oriented Python

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A Route to a Delete Action

Rails Routes and Resources

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Routes to Update Actions

Rails Routes and Resources

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Routes for Create Actions

Rails Routes and Resources

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A Route to a Read Action

Rails Routes and Resources

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Rails Resource Index

Rails Routes and Resources

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Maintaining Secure Web Apps

Introduction to Application Security

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Protecting Data and Keeping Attackers Out

Introduction to Application Security

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Why Protect Your Web Apps

Introduction to Application Security

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Security: Solutions

Introduction to Data Security

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Security: Concerns

Introduction to Data Security

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Security in Practice

Security Literacy

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Common Attacks and Defenses

Security Literacy

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Introducing Unit Testing

JavaScript Unit Testing

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Test Drive

Introduction to Selenium

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Exploring Best Practices

Introduction to Selenium

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Meet Selenium

Introduction to Selenium

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Gotchas and Wins

Java Arrays

Achievement

Iteration

Java Arrays

Achievement

Creation

Java Arrays

Achievement

Delivering the MVP

Java Objects

Achievement

Creating the MVP

Java Objects

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Harnessing the Power of Objects

Java Objects

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Meet Objects

Java Objects

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Lists, Code, Links and Images

Markdown Basics

Achievement

Understanding Markdown

Markdown Basics

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Differentiating Between Objects

Object-Oriented Swift

Achievement

Class Inheritance

Object-Oriented Swift

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Classes in Swift

Object-Oriented Swift

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Python: Instant Objects

Object-Oriented Python

Achievement

Dungeon Game 2

Python Collections (2016, retired 2019)

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Python Sets

Python Collections (2016, retired 2019)

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User Registration and Login

User Authentication With Express and Mongo

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What is Authentication?

User Authentication With Express and Mongo

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Quiz Practice Project

Object-Oriented JavaScript (2015)

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Prototypal Inheritance

Object-Oriented JavaScript (2015)

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Constructor Functions & Prototypes

Object-Oriented JavaScript (2015)

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Introduction to Methods

Object-Oriented JavaScript (2015)

Achievement

Updating and Uninstalling Packages with npm

npm Basics

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Installing Packages with npm

npm Basics

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What is npm?

npm Basics

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Middleware

Express Basics

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Deeper into Routing with Express

Express Basics

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Using Templates with Express

Express Basics

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Getting Started with Express

Express Basics

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Go Further With Mongo

Mongo Basics

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Working With Collections

Mongo Basics

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Understanding MongoDB

Mongo Basics

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Create Function Using Arrow Syntax

Getting Started With ES2015

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Using Template Literals

Getting Started With ES2015

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Defining Variables With let and const

Getting Started With ES2015

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Finishing the Game

Introducing JavaScript

Achievement

Introducing JavaScript

Introducing JavaScript

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Python Tuples

Python Collections (2016, retired 2019)

Achievement

Python Dictionaries

Python Collections (2016, retired 2019)

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Python Slices

Python Collections (2016, retired 2019)

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Angular Form Validation

Angular Basics

Achievement

Angular Basic Forms

Angular Basics

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Services in Angular

Angular Basics

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Angular Components

Angular Basics

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Setting Up an Angular Application

Angular Basics

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AJAX and APIs

AJAX Basics (retiring)

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What To Test

Unit Testing in C#

Achievement

Test Driven Development

Unit Testing in C#

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Writing Unit Tests

Unit Testing in C#

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Unit Testing

Unit Testing in C#

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Hello Internet!

Security Literacy

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Getting to Know Bootstrap 4

Bootstrap 4 Basics

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Transitions Framework

Animations and Transitions

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Animation Basics

Animations and Transitions

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Controllers

ASP.NET MVC Basics

Achievement

Project Setup

ASP.NET MVC Basics

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Functional Programming with Scala

Introduction to Scala

Achievement

First Steps in React

React Basics (retired)

Achievement

jQuery and AJAX

AJAX Basics (retiring)

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Big Data at Netflix

Introduction to Big Data

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Where and How Big Data Is Used

Introduction to Big Data

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What is Big Data

Introduction to Big Data

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Hello, jQuery!

Introduction to jQuery

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Getting Started with CSS Transitions

CSS Transitions and Transforms

Achievement

Building a Layout with Flexbox

CSS Flexbox Layout

Achievement

Flexbox Properties

CSS Flexbox Layout

Achievement

Understanding Flexbox

CSS Flexbox Layout

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Getting Started With HTML

HTML Basics

Achievement

Responsive Patterns

Responsive Layouts

Achievement

Media Queries

Responsive Layouts

Achievement

Responsive Theory

Responsive Layouts

Achievement

Positioning Page Content

CSS Layout Basics

Achievement

CSS Layout Project

CSS Layout Basics

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Page Layout with the Float Property

CSS Layout Basics

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Controlling Layout with CSS Display Modes

CSS Layout Basics

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Getting Started with CSS Layout

CSS Layout Basics

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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

Achievement

Self-Assessment

Careers Foundations

Achievement

Complex Data Structures

Object-Oriented Swift

Achievement

Responding to User Interaction

JavaScript and the DOM

Achievement

Making Changes to the DOM

JavaScript and the DOM

Achievement

Getting Started with MongoDB

Mongo Basics

Achievement

Programming AJAX

AJAX Basics (retiring)

Achievement

Adding Power to Functions

Functions in Swift

Achievement

Functions in Swift

Functions in Swift

Achievement

Control Flow With Conditional Statements

Swift Collections and Control Flow

Achievement

Control Flow With Loops

Swift Collections and Control Flow

Achievement

Dictionaries in Swift

Swift Collections and Control Flow

Achievement

Introduction to Collections

Swift Collections and Control Flow

Achievement

Swift Operators

Swift Basics

Achievement

Swift Types

Swift Basics

Achievement

An Introduction to Swift Programming

Swift Basics

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AJAX Concepts

AJAX Basics (retiring)

Achievement

What is User Experience (UX)?

UX Basics

Achievement

Getting a Handle on the DOM

JavaScript and the DOM

Achievement

Selectors - Beyond the Basics

CSS Selectors

Achievement

The Browser Environment

JavaScript and the DOM

Achievement

Python Lists

Python Collections (2016, retired 2019)

Achievement

PHP Arrays

PHP Arrays and Control Structures

Achievement

Selecting Elements and Adding Events with JavaScript

Interactive Web Pages with JavaScript

Achievement

JavaScript and the DOM

Interactive Web Pages with JavaScript

Achievement

Using a jQuery Carousel

Using jQuery Plugins

Achievement

Add a Sticky Navigation Bar

Using jQuery Plugins

Achievement

Standard ListViews

Android Lists and Adapters (2015)

Achievement

Updating the Data Model

Android Lists and Adapters (2015)

Achievement

Introducing jQuery Plugins

Using jQuery Plugins

Achievement

Data Reader

C# Streams and Data Processing

Achievement

Creating a Simple Drawing Application

jQuery Basics (2014)

Achievement

Adding a Model Attribute

Ruby on Rails 5 Basics

Achievement

Using the Rails Console

Ruby on Rails 5 Basics

Achievement

GET and POST Requests in a Browser

HTTP Basics

Achievement

Introduction to HTTP

HTTP Basics

Achievement

Handling Rails Requests

Ruby on Rails 5 Basics

Achievement

Creating Rails Apps

Ruby on Rails 5 Basics

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Loops and Final Touches

C# Objects

Achievement

Encapsulation with Properties

C# Objects

Achievement

Encapsulation and Arrays

C# Objects

Achievement

PHP Conditionals

PHP Arrays and Control Structures

Achievement

PHP on the Web

PHP Basics

Achievement

Daily Exercise Program

PHP Basics

Achievement

Unit Converter

PHP Basics

Achievement

Getting to Know PHP

PHP Basics

Achievement

Choosing Options

HTML Forms

Achievement

Creating a Password Confirmation Form

jQuery Basics (2014)

Achievement

Creating a Mobile Drop Down Menu

jQuery Basics (2014)

Achievement

Organizing Forms

HTML Forms

Achievement

Form Basics

HTML Forms

Achievement

Inheritance

C# Objects

Achievement

Build a Simple Todo List Program

Ruby Booleans

Achievement

Installing a Ruby Development Environment

Installing a Ruby Development Environment

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PHP Internal Functions

PHP Functions

Achievement

PHP Returns & Closures

PHP Functions

Achievement

Adding a New Web Page

Introduction to HTML and CSS

Achievement

Make It Beautiful with CSS

Introduction to HTML and CSS

Achievement

HTML: The Structural Foundation of Web Pages and Applications

Introduction to HTML and CSS

Achievement

Getting Familiar with HTML and CSS

Introduction to HTML and CSS

Achievement

PHP Functions Basics

PHP Functions

Achievement

Installing Wordpress

How to Make a Website with WordPress

Achievement

Hooking up the Model to the View

Build a Weather App (2015)

Achievement

Building the Weather UI

Build a Weather App (2015)

Achievement

Creating a Simple Lightbox

jQuery Basics (2014)

Achievement

Creating a Spoiler Revealer

jQuery Basics (2014)

Achievement

Methods

C# Objects

Achievement

Object-Oriented Programming

C# Objects

Achievement

Scrum Artifacts

Scrum Basics

Achievement

Scrum Events

Scrum Basics

Achievement

Introducing Scrum

Scrum Basics

Achievement

What is Agile?

Scrum Basics

Achievement

Securing and Maintaining a MySQL Database

Database Foundations

Achievement

SQL Calculating, Aggregating and Other Functions

Database Foundations

Achievement

Manipulating Schema with SQL

Database Foundations

Achievement

Joining Relational Data Between Tables in 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

Introduction to Data, Databases and SQL

Database Foundations

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

Welcome to the Treehouse Club

Treehouse Club: HTML

Achievement

WWW

How the Web Works

Achievement

The Internet

How the Internet Works

Achievement

Computer Languages

Computer Basics

Achievement

Computer Basics

Computer Basics

Achievement

Workflows

Git Basics

Achievement

Working With Remote Repositories

Git Basics

Achievement

Merging

Git Basics

Achievement

Branches

Git Basics

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

Soft Skills - Psychology

Soft Skills

Achievement

Writing Online

Soft Skills

Achievement

Getting Started With Git

Git Basics

Achievement

Why Version Control Matters

Git Basics

Achievement

Installing Programs

Console Foundations

Achievement

Introduction to jQuery

jQuery Basics (2014)

Achievement

Working with JSON

Build a Weather App (2015)

Achievement

JavaScript Objects

JavaScript Loops, Arrays and Objects

Achievement

Memory, Arrays and Loops, Oh My!

Object-Oriented Objective-C

Achievement

JavaScript Arrays

JavaScript Loops, Arrays and Objects

Achievement

Setting Up Your Local Environment for Spring Development

Spring Basics

Achievement

JavaScript Loops

JavaScript Loops, Arrays and Objects

Achievement

Ruby Booleans

Ruby Booleans

Achievement

What to Test

Unit Testing in Java

Achievement

How To Test

Unit Testing in Java

Achievement

Why Test

Unit Testing in Java

Achievement

Environment and Redirection

Console Foundations

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

Letter Game App

Python Basics (2015)

Achievement

Number Game App

Python Basics (2015)

Achievement

Shopping List App

Python Basics (2015)

Achievement

The Logo Sprint

Logo Design Basics

Achievement

Console Processes

Console Foundations

Achievement

Console Users and Permission

Console Foundations

Achievement

Moving Around in the Console

Console Foundations

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

Finding the Data You Want

SQL Basics

Achievement

Getting Data from a Database

SQL Basics

Achievement

Design Foundations Final

Design Foundations

Achievement

Becoming a Problem Solver

Design Foundations

Achievement

JavaScript Functions

JavaScript Basics

Achievement

Logo Design 101

Logo Design Basics

Achievement

Fundamental Concepts

CSS Basics

Achievement

Designing with the Latest Features

CSS Basics

Achievement

Understanding Aesthetics

Design Foundations

Achievement

JavaScript Conditional Statements

JavaScript Basics

Achievement

Introduction to Design

Design Foundations

Achievement

Creating an Icon

Illustrator Foundations

Achievement

Introduction to Illustrator

Illustrator Foundations

Achievement

Basic Layout

CSS Basics

Achievement

The Box Model

CSS Basics

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

JavaScript Numbers

JavaScript Basics

Achievement

JavaScript Variables

JavaScript Basics

Achievement

Introducing JavaScript

JavaScript Basics

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

Achievement

Understanding Values and Units

CSS Basics

Achievement

Basic Selectors

CSS Basics

Achievement

Getting Started with CSS

CSS Basics

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

Data, Databases and SQL

SQL Basics

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

Build a Simple Contact List

Ruby Loops

Achievement

Ruby Iteration

Ruby Loops

Achievement

Ruby Loops

Ruby Loops

Achievement

Exploring the Java Collections Framework

Java Data Structures

Achievement

Organizing Data

Java Data Structures

Achievement

Productivity

Soft Skills

Achievement

Presentation Skills

Soft Skills

Achievement

Build a Grocery List Program

Ruby Collections

Achievement

Important Skills For Professional Success

Soft Skills

Achievement

Ruby Hashes

Ruby Collections

Achievement

Ruby Arrays

Ruby Collections

Achievement

Perfect

C# Basics (Retired)

Achievement

Getting There

Java Data Structures

Achievement

Perform

C# Basics (Retired)

Achievement

Console I/O

C# Basics (Retired)

Achievement

Prepare and Plan

C# Basics (Retired)

Achievement

Getting Oriented - Object-Oriented, That Is

Object-Oriented Objective-C

Achievement

Logic in Python

Python Basics (2015)

Achievement

Python Data Types

Python Basics (2015)

Achievement

Concurrency and Error Handling

Build a Weather App (2015)

Achievement

Networking

Build a Weather App (2015)

Achievement

Exploring an API

Build a Weather App (2015)

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

Delivering the MVP

Java Objects (Retired)

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

Python For Beginners

Python Basics (2015)

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

Immersive Examples

Objective-C Basics

Achievement

Scope and Loops

Objective-C Basics

Achievement

More Operators

Objective-C Basics

Achievement

Operators and Conditionals

Objective-C Basics

Achievement

Data Types and Variables

Objective-C Basics

Achievement

Intro to Objective-C

Objective-C Basics

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

Newbie