Here are some books:
Simmers Paintshop store for skinners and simmers - Books about Graphics
But our tutorials also help to learn some basics:
http://www.simmerspaintshop.com/foru...m37-photoshop/
Start with the Brushes at least to the point how to use them (not how to make them)
Understand what layers are and how they work
And know how you can make selections.
