Courses
797 hands-on courses across every major language, framework, and discipline.
Python Foundations
Start Python from zero. Set up your environment, learn the core syntax, and write your first working programs with confidence.
JavaScript Foundations
Start JavaScript from zero. Set up your environment, learn the core syntax, and write your first working programs with confidence.
TypeScript Foundations
Start TypeScript from zero. Set up your environment, learn the core syntax, and write your first working programs with confidence.
Java Foundations
Start Java from zero. Set up your environment, learn the core syntax, and write your first working programs with confidence.
C# Foundations
Start C# from zero. Set up your environment, learn the core syntax, and write your first working programs with confidence.
Go Foundations
Start Go from zero. Set up your environment, learn the core syntax, and write your first working programs with confidence.
Core Python
Go beyond the basics of Python: data types, collections, error handling, and the standard library you reach for every day.
Intermediate Python
Level up your Python. Write idiomatic, well-structured code and solve real problems with the right tools and patterns.
Advanced Python
Master advanced Python: deep language features, metaprogramming, internals, and the techniques senior engineers rely on.
Object-Oriented Programming in Python
Design with objects in Python: classes, inheritance, composition, and SOLID principles for maintainable systems.
Functional Programming in Python
Apply functional techniques in Python: pure functions, immutability, higher-order functions, and composition.
Concurrency & Parallelism in Python
Write fast, correct concurrent Python: threads, async, synchronization, and avoiding race conditions and deadlocks.
Testing & TDD in Python
Ship reliable Python: unit and integration tests, mocking, and test-driven development workflows.
Data Structures & Algorithms in Python
Implement and apply the essential data structures and algorithms in Python, with complexity analysis and interview-style problems.
Design Patterns in Python
Apply battle-tested design patterns in Python to write flexible, maintainable, and extensible software.
High-Performance Python
Make Python fast: profiling, memory, algorithmic improvements, and the optimization techniques that matter in production.
Python by Building Projects
Learn Python by shipping real projects. Each one adds a new skill and something concrete to your portfolio.
Python Technical Interview Prep
Prepare for Python interviews: language deep-dives, common questions, coding challenges, and how to stand out.
Idiomatic Python & Best Practices
Write Python the way experts do: idioms, conventions, anti-patterns to avoid, and production-grade best practices.
Core JavaScript
Go beyond the basics of JavaScript: data types, collections, error handling, and the standard library you reach for every day.
Intermediate JavaScript
Level up your JavaScript. Write idiomatic, well-structured code and solve real problems with the right tools and patterns.
Advanced JavaScript
Master advanced JavaScript: deep language features, metaprogramming, internals, and the techniques senior engineers rely on.
Object-Oriented Programming in JavaScript
Design with objects in JavaScript: classes, inheritance, composition, and SOLID principles for maintainable systems.
Functional Programming in JavaScript
Apply functional techniques in JavaScript: pure functions, immutability, higher-order functions, and composition.