Why pay hundreds of dollars for PhotoShop when you can get something just as powerful that is free?! It's called GIMP.
GIMP, which stands for GNU Image Manipulation Program, is a free graphic and image editing software program. GIMP is available for Mac, PC and Linux platforms. Since GIMP is open source, the software -- including any upgrades -- is available for free.
This beginners manual will teach you what you need to know to get you editing photos in no time.