Coursera - Build skills with courses, certificates, and degrees online from world-class universities and companies

Free Code Camp - Learn to code by helping nonprofits.

Khan Academy - Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.

W3Schools - W3Schools is a web developers information website, with tutorials and references on web development...

Udemy - Online Courses - Learn Anything, On Your Schedule

Codecademy - Learn the technical skills you need for the job you want. As leaders in online education and learning to code, we’ve taught over 45 million people using a tested curriculum and an interactive learning environment.