I’m currently taking a Photoshop 2 class and our textbook is Photoshop CS4 The Missing Manual by Lesa Snider King. I think it’s one of the best Photoshop books for students. The examples and explanations are very easy to understand, and the author has a humorous style of writing. I’ve been working on the exercises every week-end, and trying to read and study during the week. It’s difficult, though, trying to find enough time.