New Guide - Humane Guide to Debugging Web Apps
If there's one skill I would tell students and junior developers to really focus on, it's debugging. The ability to debug your programs, figure out why things are not working and how to find the right spots were they go wrong is an ageless skill. It's not gonna get old and it's not tied to any specific technology.
Let me know what you think of the guide by tweeting at me at https://twitter.com/hamatti.