A couple of ITPers showed me this new tagging feature on Amazon (I'm not sure if it's new or if I'm just late), but I will probably investigate a little further for Hypershelf and Smart Shelf (thesis and collaborative projects), which use tagging. I just bought this book about Processing (Casey Reas and Ben Fry) authored by Dan Shiffman, a professor at ITP.

This book is suppose to be for beginners. Link to Amazon.