These four sites offer step-by-step tutorials that take very different approaches to programming instruction. One of them is perfect for your level of coding experience.

Code Avengers is one of the most in-depth and most informative sites we’ve come across, teaching you not just how to do something, but also why you’re doing it.

I’m starting up to solve a problem I care deeply about…. Should I learn how to code to build out a prototype? Should I outsource development initially? Should I study computer science? These ...