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The Developer‘s Handbook

Bite-Sized Learning for
Busy Developers

No fluff. Just the essential concepts, patterns, and best practices you need to build great software.

Web Foundations

The building blocks of the web.

HTML Foundations

Learn the foundation of every website with HTML - the markup language that structures all web content

28 Lessons
Start

CSS Foundations

Master styles and layouts—from syntax to responsive design

26 Lessons
Start

JavaScript Foundations

Master the fundamentals of JavaScript programming

26 Lessons
Start
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Pro

TypeScript Foundations

Master static typing to write safer, more maintainable JavaScript

22 Lessons
View
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Pro

React Foundations

Master component-based UI development with React

26 Lessons
View

Web Advanced

Modern frameworks and complex logic.

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Pro

CSS Advanced

Master modern CSS—selectors, container queries, animations, and architecture

24 Lessons
View
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Pro

React Advanced

Master advanced patterns, hooks, and professional workflows

22 Lessons
View
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Pro

JavaScript Advanced

Master the inner workings of JavaScript: async patterns, functional programming, OOP, and modern tooling

25 Lessons
View
Upgrade to Unlock
Pro

TypeScript Advanced

Master static typing to write safer, more maintainable JavaScript

22 Lessons
View
CodeHandbook

Master coding concepts through interactive practice.

Product

  • Handbook
  • Practice
  • Pricing

Resources

  • About
  • Guides
  • Contact Support

Legal

  • Terms of Service
  • Privacy Policy
  • Cookie Policy

© 2026 CodeHandbook. All rights reserved.