If you work with graphics, or if you want to start doing so, you probably either already use GIMP, one of the very best open source graphics applications, or you have it on your radar. GIMP is so powerful that it can be daunting for new users, so we regularly update our collection of accessible, free resources for learning GIMP and making using it easier. The good news is that GIMP is popular enough that many people create documentation for it that goes well beyond what the project leaders provide. Here is our latest roundup, including a great, free online GIMP book.