I've always wanted to get my teeth into a good, no holds barred how-to book on using Photoshop's channel operations, but none measured up until now. I always felt the Photoshop manual, and other 3rd party how-to books fell very short on using channels. Dave, Bert and Nathan, authors of this book, have done an excellent job of introducing you to the basics, and then taking you way beyond where the others leave off. They stick exactly to the topic of channels, always giving lots of examples and experienced tips from their work. You'll learn about RGB and Alpha channels, layers and layer options, masks, paths, blue/green screen techniques and more. Sink your chops into this one, byte off a big chunk, and feed your brain. BTW, I bought this book like everyone else, I just think it's that good, and they deserve the recognition for their hard work.
PC Resources for Photoshop (a personal web site not affiliated with Adobe, or anything else for that matter)