Easy Photoshop Guide : Part 1 An Idiot’s Photoshop Guide.
Adobe Photoshop Guidebook
One of the things you often see us talking about when explaining Photoshop techniques is layer masks. If you are new to using Photoshop and haven’t had much experience in the interface, you may be totally lost as to what this means. Here you can learn everything that you need to know about layer masks, so you can start using them with confidence!