https://www.codeavengers.com/ Learn how to code games, apps and websites with fun and effective interactive games. HTML, CSS and JavaScript tutorials are for beginners.
https://www.codecademy.com/ Interactive courses on how to program. Courses are created by community and cover CSS, Java, HTML.
https://www.codeschool.com/ Learn to code in the comfort of your browser with video tutorials, programming challenges, and screencasts.
https://teamtreehouse.com/ Treehouse is an online technology school that offers beginner to advanced courses in web development
https://www.udacity.com/ Join Udacity and learn to code from the best online free courses and Nanodegree programs.
https://codehs.com/ CodeHS has everything you need to teach computer science at your school, including web-based curriculum, teacher tools, administrator insights, and professional development.
https://www.khanacademy.org/computing/computer-programming "What can you do with a career in computing? Meet a professional - everyone from mobile health app developers to product managers to physics programmers."
http://sqlzoo.net/ A step-by-step tutorial with live interpreters, allowing access to tables using any of Oracle, SQL Server, MySQL, Access or PostgreSQL engines.
https://code.org/learn Code.org® is a non-profit dedicated to expanding access to computer science, and increasing participation by women and underrepresented minorities. Our vision is that every student in every school should have the opportunity to learn computer science, just like biology, chemistry or algebra.
https://codecombat.com/ CodeCombat is a platform for students to learn computer science while playing through a real game.Our courses have been specifically playtested to excel in the classroom, even by teachers with little to no prior programming experience.