Kotlin

Learn Kotlin by creating working applications

Learn Kotlin by practicing

Learn Kotlin with instant feedback

Learn Kotlin with the help you need

Quickstart Guide

JetBrains Academy

Learn programming by creating working applications with JetBrains Academy, a project-based learning platform.

Learn by doing

Go beyond lectures — learn by developing. Choose a project and work through a curriculum that contains all the concepts necessary to build it. Challenge yourself to integrate everything that you’ve learned into your applications.

See how it's all related

Explore new topics and projects that become available to you as you improve. Navigate the Knowledge Map, which displays your progress, the full scope of available topics, and the connections between them.

Learn from inside your IDE

Master professional tools and become an accomplished developer. Enjoy the platform’s full integration with JetBrains IDEs while working on your projects.

Kotlin Koans

Want to get started with Kotlin, the powerful new programming language from JetBrains, but don’t know where to begin?

The Kotlin Koans course is a series of exercises specially designed to get you familiar with the Kotlin syntax.

Find more details in the course’s Quickstart Guide

Atomic Kotlin

Atomic Kotlin is the book by Bruce Eckel and Svetlana Isakova that comes with learning resources. It explains Kotlin to both novices and experienced programmers, with no prior Java experience required, and now is open for early access.

The book is accompanied by the course – a set of code examples and small tasks with automatic checking and available answers.

Find more details in the course’s Quickstart Guide

Kotlin for Java Developers

Kotlin for Java Developers is a Coursera course by Svetlana Isakova and Andrey Breslav.

This course is designed for experienced developers who know Java and want to learn the ins and outs of Kotlin and how it is different from Java.
The course includes programming assignments to be solved using JetBrains Educational Products.

Read the Coursera Programming Assignments for more details

Integration with Stepik

Stepik is a learning management and MOOC platform, which can be used by an educator to share courses with you privately. Stepik has a lot of public courses available, which you can access from your IDE.

Progress synchronization

If you like learning the theory lessons on Stepik but prefer to do the coding exercises in the IDE – you don't need to worry about losing your course progress. All your progress is synchronized between the platforms.

Importing more courses

You can import any course from Stepik that has programming tasks, which you can solve right inside the IDE. You can easily switch back-and-forth with Stepik any time you want.

550

massive open online courses (MOOCs) and small private online courses (SPOCs) hosted on Stepik

60 000 000

solved asignments submitted by Stepik learners

Professional Environment

Productivity features such as smart code completion, code inspections, a visual debugger, and more not only boost your learning productivity, but later help you switch easily and seamlessly to other JetBrains tools.

Enjoy a fine–tuned workspace

Feel more at home with your IDE and help yourself stay focused and avoid distraction, with customizable color and keyboard shortcut schemes, and all the look-and-feel settings you need for productive development.

Learn faster with a smart editor

Take advantage of language-specific syntax & error highlighting to help you avoid code mistakes. Learn how to style your code right with the code formatting, and don't ever get stuck thanks to code completion and quick documentation.

Run & debug your code

Run your code to be sure everything goes right. Use the powerful debugger with a graphical UI to find out what went wrong—set breakpoints, run your code step by step and have all the information available to you at your fingertips.