Evil Genuises in a Nutshell
The latest User Friendly book from O'Reilly, featuring the adventures of the gang from Columbia Internet.
GIMP: The Official Handbook
This book takes graphic artists, animators, and Web content developers from "square one" all the way through GIMP's advanced features like filters, scripting, and animation. This straightforward, hands-on tutorial offers plenty of examples and a full-color gallery of GIMP graphics to get you thinking creatively.