Peachpit Press Layers: The Complete Guide to Photoshop's Most Powerful Feature, 2nd Edition, 312 Page Softcover Book by Matt Kloskowski

In 2008, Adobe Photoshop pro and best-selling author Matt Kloskowski broke new ground teaching Photoshop by focusing on the one thing that makes Photoshop the amazing (and sometimes difficult to understand) program it is: layers. Now, Matt returns with a major update to the book that explains "the key to understanding Photoshop" in the same concise, easy to understand way that's made him so well known in the field of Photoshop training.