Codecademy

Codecademy is an American online interactive platform that offers free coding classes in various programming languages including Python, Java, Go, JavaScript, Ruby, SQL, C++, C#, adn Swift. With Codecademy it's easy to learn the technical skills you need for the job you want. As leaders in online education and learning to code, Codecademy taught over 50 million people using a tested curriculum and an interactive learning environment.