Free • Open • Comprehensive

Master TypeScript
from Zero to Hero

A structured, hands-on course that takes you from your first type annotation to advanced generics, mapped types, and production-ready patterns.

20+ Lessons
3 Levels
100+ Examples
intro.ts

The language that scales with you

TypeScript is the industry standard for building maintainable, large-scale JavaScript applications.

🛡️

Catch Bugs Early

Type errors caught at compile time, not runtime. Ship more reliable code with confidence.

🧠

Better Intellisense

Rich IDE support with autocompletion, refactoring tools, and inline documentation.

📐

Self-Documenting Code

Types serve as living documentation. Understand codebases instantly, even unfamiliar ones.

🚀

Industry Standard

Used by Microsoft, Google, Airbnb, Slack, and virtually every major tech company.

♻️

100% JavaScript Compatible

Any valid JavaScript is valid TypeScript. Migrate gradually at your own pace.

🔧

Powerful Tooling

Advanced generics, utility types, and conditional types for any abstraction you need.

Your roadmap to TypeScript mastery

Follow a proven progression from first types to production patterns.

01

Beginner

Foundations & core concepts

  • What is TypeScript & Why it matters
  • Installation & tsconfig setup
  • Primitive & complex types
  • Functions with types
  • Interfaces vs Type aliases
Start here →
02

Intermediate

Power features & patterns

  • Union & Intersection types
  • Type narrowing & guards
  • Generics (intro to advanced)
  • Enums & Type assertions
  • Modules & namespaces
Continue →
03

Advanced

Expert-level mastery

  • Advanced generics & constraints
  • Utility types deep dive
  • Conditional & mapped types
  • Declaration files (.d.ts)
  • TypeScript with APIs
Level up →

Ready to become a TypeScript expert?

Join thousands of developers who've leveled up their skills. Start with Lesson 1 — it's completely free.

Begin Your Journey