Courses

32 courses, 330 lessons and 101 checked exercises, all free. Not sure where to begin? Start with Python.

Good first languages Friendly languages to learn programming with.

Python

Beginner

A readable, general-purpose language for scripts, data and the web.

34 lessons · 47 exercises

JavaScript

Beginner

The programming language of the web, used in browsers and on servers.

18 lessons · 23 exercises

TypeScript

Intermediate

JavaScript with types, for catching mistakes before your code runs.

13 lessons · 8 exercises

Ruby

Beginner

A readable, object-oriented scripting language, best known for web apps built with Rails.

11 lessons

Lua

Beginner

A small, simple scripting language used in games, mods and apps.

8 lessons

Build for the web Pages, styles, front-end frameworks and servers.

HTML

Beginner

The markup language that gives every web page its structure.

8 lessons

CSS

Beginner

The style sheet language that controls how web pages look.

9 lessons

Tailwind CSS

Beginner

A CSS framework built from small utility classes you apply directly in your HTML.

8 lessons

React

Intermediate

A JavaScript library for building user interfaces from components.

12 lessons

Vue

Intermediate

An approachable JavaScript framework for building web interfaces.

7 lessons

Vite

Intermediate

A fast development server and build tool for front-end projects.

6 lessons

Node.js

Intermediate

A runtime for running JavaScript outside the browser, on servers and in tools.

7 lessons

PHP

Beginner

A server-side language for building websites and web apps.

8 lessons

Data and everyday tools Databases, version control and the command line.

SQL

Beginner

The standard language for querying and changing data in relational databases.

12 lessons · 15 exercises

Git

Beginner

A version control tool that records the history of your project.

8 lessons

How the Terminal Works

Beginner

How the terminal and shell work, and what happens when you run a command.

7 lessons · 5 exercises

Bash

Beginner

The standard shell on Linux and macOS, used for commands and scripts.

8 lessons · 3 exercises

PowerShell

Beginner

Microsoft's cross-platform shell for automating Windows, Linux and macOS.

8 lessons

Apps and systems languages Compiled languages for apps, services and performance.

Go

Intermediate

A small, fast, compiled language for servers, command-line tools and cloud services.

12 lessons

Rust

Advanced

A fast systems language that prevents memory bugs at compile time.

12 lessons

Java

Intermediate

A statically typed, object-oriented language for Android apps and large backend systems.

13 lessons

Kotlin

Intermediate

A concise, modern language for Android apps that runs on the JVM.

8 lessons

Swift

Intermediate

Apple's language for building iPhone, iPad and Mac apps.

8 lessons

C#

Intermediate

A modern, typed language from Microsoft for apps, games and web services on .NET.

13 lessons

C++

Advanced

A fast, compiled language that builds on C with classes, templates and a large standard library.

13 lessons

C

Intermediate

A small, fast systems language that shows you how computers really work.

12 lessons

How computers work The ideas underneath every program.

Data Structures & Algorithms

Intermediate

Common ways to organise data and solve problems efficiently.

9 lessons

How the Internet Works

Beginner

What happens between typing a URL and seeing the page.

7 lessons

Computer Architecture

Advanced

How the hardware runs your code.

7 lessons

Operating Systems

Advanced

The software that manages the hardware and runs your programs.

7 lessons

Compilers

Advanced

How source code is turned into a program the computer can run.

7 lessons

Assembly

Advanced

The human-readable form of the instructions a CPU actually runs.

10 lessons