I have been reading Corey Barker‘s book ‘Photoshop Down & Dirty Tricks For Designers‘ for a few weeks now. And I really like the book. In the book Corey works on 7 project, step by step. You can download all the images he uses and then follow him. It is not necessary to have any knowledge of Photoshop. But it will make it a bit easier.

Below is the result of playing a little by myself in Photoshop.