Trinket lets you run and write code in any browser, on any device.
In Automate the Boring Stuff with Python, you’ll learn how to use Python to write programs that do in minutes what would take you hours to do by hand-no prior programming experience required.
freeCodeCamp is a nonprofit organization that consists of an interactive learning web platform that makes learning web development accessible to anyone.
Computational Thinking Illustrated is a cartoon guide to solving problems, designing systems, and understanding human behaviour!
101 Computing is a great resource site from the UK that focuses on providing thorough lessons for a variety of coding purposes.