1. Exercism


              Level up your programming skills with 3,141 exercises across 51 languages, and insightful discussion with our dedicated team of welcoming mentors. Exercism is 100% free forever.

              Explore languages



              Learning through Exercism is quite different to other programming websites, with a focus on individual practice and mentor-based learning. Here's how it works.

              1. Choose a language to master

              Object oriented, functional, popular, emerging, or just plain obscure. With 51 different languages to explore, Exercism has something for you!

              2. Complete a coding challenge on your computer

              All the coding happens on your machine in an environment you're familiar with. Download the template, solve the problem, and then upload your solution.

              3. Upload your solution and review it with a mentor

              Discussing code is one of the best ways to learn. Our friendly mentors will comment on your solutions online, introducing you to new ideas and techniques.


              Our tracks have between 40 and 100 exercise each - some are fun, some are tricky, some are weird, but all will teach you something new.

              5. Complete the language track and achieve fluency

              At the end of your language track you will have mastered the core concepts and idioms of your language and be ready to use it in the real world.

              Sign up to Exercism and get started on your first track now.

              Sign up for FREE
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