Photoshop CS is primarily for Photographers, Photoshop CS Extended is primarily for Designers/Graphic Artists and also has the capability of handling Video. If you have a valid student card you can buy the software at greatly reduced prices, or maybe a student friend could buy it on your behalf. Just about nobody really needs the latest photoshop CS software, but there's always the "I want it!" Factor. Elements 10 will probably do all you need. Earlier versions are available on Amazon for very little. I have CS5 Extended, which I bought as a very mature student for £190. I have no intention of upgrading, I'll never ever use all the features in it, though I'm currently exploring the Design possibilities.