Beginning GIMP: From Novice to Professional is a comprehensive but clear, concise, and attractive guide for absolute beginners (who have never edited an image before) to learn using GIMP (GNU Image Manipulation Program), an increasingly popular free and open-source image processing application, from scratch.

If Blender is the best free alternative of Autodesk 3ds Max or Maya, then GIMP is the best free alternative to Adobe Photoshop. Similarly, its powerful and numerous functions, complex features require special books to explain in depth, otherwise, it's extremely difficult to master GIMP. The Book of GIMP is one of the best few complete guide books about GIMP that cover almost any GIMP knowledge.