I recently purchased a 15" MBP and it seems like everybody thinks one to one is a necessity for a first time mac owner (like me). I don't have enough money to spend on something I don't need right now so how important is it? I am not going to be transferring any files. Can I learn most of the tips from apples how to videos? What else do I need to know? Not sure if this is the right forum but I appreciate any help given.