Alright so I've been using a windows for like forever. I've had iPods in the past and I have a iPhone 4 and iPad 2 right now. I've never had a mac though. My pc is almost at the end of it's life and I think it's time for an upgrade and o was thinking about getting a MacBook pro once school starts. As a long time windows user switching to Mac what do I need to know about the transition or what's the hardest thing I'll probably come across?