Did you see >>25 ?

You can also probably find some good books at your local bookstore if you're willing to drop some bucks. I've never read any of the "Missing Manual" books, but they seem to be pretty highly regarded. http://www.oreilly.com/catalog/macxmmpanther/

Mac OS X Hints is sometimes good for specific "How do I ___?" questions.
http://www.macosxhints.com/

Or, of course, you could just post here and ask me.