A practical introduction
Rust
Master Rust's ownership model, borrow checker, and zero-cost abstractions through hands-on lessons. Build safe, concurrent systems code with our free interactive playground.
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A language for every idea.
Explore six practical courses. Start with a full lesson, or fit a little practice into your day.
A practical introduction
TypeScript
Level up your JavaScript with TypeScript's powerful type system. Learn interfaces, generics, and advanced types through practical exercises and a free browser-based playground.
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JavaScript
Go from zero to building real web apps with JavaScript. Cover ES6+ features, async programming, DOM manipulation, and modern patterns with our free interactive playground.
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PHP
Build dynamic web applications with modern PHP 8+. Learn named arguments, fibers, enums, and Laravel fundamentals through hands-on exercises and a free code playground.
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SQL
Write powerful database queries from day one. Learn SELECT, JOIN, subqueries, indexing, and query optimization through interactive exercises with a free browser-based SQL playground.
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Zig
Explore Zig's compile-time execution, manual memory management, and C interop. Learn systems programming without the complexity of C++ through free hands-on lessons and a code playground.
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