I'm looking to finally step into the command line and see what all the fuss is about. I've grown up on GUIs and never really understood the appeal of mashing in key commands to navigate directories when mouse clicks and shiny visuals seem to make things so much faster. But there seems to be a lot of power undr OSX's hood and I'd like to learn about it. Does anybody have good recommendations for learning resource on Terminal? Specifically those that use OSX as a jumping off point? I found Peepcode's podcast on the subject, but budget's are thin right now, and I can't help feeling bad about paying for information I know I can get elsewhere (possibly through the library) for free. Thanks in advance.