The interactive self-study course consists of 68 levels covering all necessary topics: from basic syntax to advanced coroutines and asynchronous programming. You'll find over 340 lectures and 680+ practical tasks.

We've created a special practice environment where you can safely experiment with Kotlin code. All programs are compiled and executed in real-time, and you see the results instantly. This allows you to learn through practice without risk of breaking anything.

The course has over 680 Kotlin programming tasks — 7 times more than any other Kotlin course! You'll learn to create classes and objects, work with collections, use coroutines, program functionally and asynchronously. Each task has clear instructions and instant solution verification.

After submitting a solution for verification, you'll see a detailed report: which requirements are met and which aren't. Instead of guessing why your program doesn't work, you know exactly what needs to be fixed.

All your Kotlin programs are verified automatically and instantly. The system checks not only syntax correctness but also program logic. You immediately get feedback and can improve your solution.

Our algorithms analyze your solution, and if it doesn't meet the requirements, you get smart recommendations from a virtual AI mentor. The system will suggest how to improve the code and avoid common mistakes.