The book looks at all kinds of digital retouching and compositing techniques, written especially from the photographer's viewpoint. Everything works with Photoshop, and all illustrations are in full color so it's easy to see exactly how the steps work as well as the final results.
This is the second book I've purchased from this author, and I find all his books to be both informative and fun (the lesson on how to convert superhero NoCopyright Man's uniform from color to an accurate black and white version is hilarious and worth the price of the book alone!) I learned a lot about photography, Photoshop, retouching, and compositing from this book. I recommend it highly.