Free • Interactive • Self-Paced

Learn by Doing

Free interactive tutorials and courses. Master programming languages, data formats, natural languages, and more. Learn with live examples, try-it-yourself editors, and instant feedback.

Courses: 22+
Available Now: 5
Interactive: 100%
Price: Free

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Development & Programming

Learn programming languages, data formats, and web development technologies.

JSON

Master JSON syntax, data types, objects, arrays, and best practices.

⏱️3 hours📚15 lessons💡50+ examples

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Python

Learn Python programming from basics to advanced: syntax, OOP, file handling, and best practices.

⏱️3 hours📚15 lessons💡50+ examples

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JavaScript

Master JavaScript fundamentals, ES6+, DOM manipulation, async programming, and modern patterns.

⏱️6 hours📚25 lessons💡150+ examples

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SQL

Learn SQL database queries, JOINs, subqueries, optimization, and data manipulation.

⏱️4 hours📚18 lessons💡80+ examples

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Java

Master Java programming: OOP, collections, multithreading, and enterprise development.

⏱️8 hours📚30 lessons💡200+ examples

Go (Golang)

Learn Go programming: concurrency, goroutines, web servers, and cloud-native development.

⏱️5 hours📚20 lessons💡100+ examples

Rust

Master Rust programming: ownership, borrowing, memory safety, and systems programming.

⏱️6 hours📚22 lessons💡120+ examples

C#

Learn C# programming: .NET framework, LINQ, ASP.NET, and enterprise development.

⏱️7 hours📚28 lessons💡180+ examples

Bash/Shell

Master Bash scripting: automation, pipes, loops, and DevOps essentials.

⏱️3 hours📚15 lessons💡60+ examples

PHP

Learn PHP programming: server-side scripting, WordPress, Laravel, and web development.

⏱️5 hours📚20 lessons💡100+ examples

Ruby

Master Ruby programming: elegant syntax, Ruby on Rails, gems, and web development.

⏱️5 hours📚20 lessons💡90+ examples

Swift

Learn Swift programming: iOS/macOS development, UIKit, SwiftUI, and Apple ecosystem.

⏱️6 hours📚24 lessons💡140+ examples

TypeScript

Master TypeScript: type safety, interfaces, generics, and modern JavaScript with types.

⏱️4 hours📚18 lessons💡100+ examples

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Languages

Learn natural languages with interactive lessons, vocabulary, and grammar.

Spanish

Learn Spanish step-by-step: greetings, numbers, colors, family, food, verbs, and travel phrases. Interactive exercises with audio pronunciation!

⏱️10 hours📚14 lessons💡200+ examples

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French

Master French language basics, conversation, and cultural context.

⏱️10 hours📚30 lessons💡200+ examples

German

Learn German grammar, vocabulary, and practical communication skills.

⏱️10 hours📚30 lessons💡200+ examples

Italian

Discover Italian language fundamentals and cultural expressions.

⏱️10 hours📚30 lessons💡200+ examples

Portuguese

Learn Portuguese vocabulary, grammar, and Brazilian/European variations.

⏱️10 hours📚30 lessons💡200+ examples

Japanese

Master Japanese hiragana, katakana, kanji, and essential phrases.

⏱️15 hours📚40 lessons💡300+ examples

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Data Formats & APIs

Understand data formats, APIs, and data exchange standards.

REST APIs

Learn REST API design, HTTP methods, status codes, and best practices.

⏱️3 hours📚15 lessons💡60+ examples

GraphQL

Master GraphQL queries, mutations, schemas, and API design.

⏱️3 hours📚15 lessons💡50+ examples

CSV Format

Understand CSV structure, parsing, and data manipulation.

⏱️1 hour📚6 lessons💡20+ examples

Ready to Start Learning?

Choose a course above and start learning with interactive examples, instant feedback, and hands-on practice.

📚 Start with JSON Tutorial→