Codecademy

Codecademy is an American online interactive platform that offers free coding classes in 12 different programming languages including Python, Java, Go, JavaScript (jQuery, AngularJS, React.js), Ruby, SQL, C++, C#, Swift, and Sass, as well as markup languages HTML and CSS. The site also offers a paid "Pro" option that gives users access to personalized learning plans, quizzes, and realistic projects.