Creating artwork for print has come along way with InDesign. You need to check for many things before printing, like missing fonts, resolution even specific spot colors. Lets look at the Live Preflight in InDesign CS4.
Two of the most important tools in Photoshop are the Clone tool and the Heal Brush Tools. Tackle them both and learn a few extra tips along the way. Retouch an old Photograph and take away spots and creases