All photoshop tutorials (CS2-CS4) can be used by any of the versions. The only difference between them are a few details here and there, and a few additional features but over all they are almost always interchangable when following a tutorial. i suggest looking at the tutorials aleady posted and try to start from there.
if you're really new and all of the features are confusing (i know there is a lot), try going to adobe.com and look at some of the tutorials they have there that will tell you what all of the tools and features are and basically how to use them.