I just purchase an 21" iMac, and i'm just an average window user. I had a hard time getting used to the mac os last night trying to figure out how it works. lol Anyway, I got a few questions: 1) When I transfer my mp3 songs from windows to the mac itune, the chinese characters doesn't shows up, what should I do?? 2) Not sure what i click, but the mac itune becomes fullscreen, what should I do to make it not fullscreen again?? 3) What's the different between itunes and app store?? One for iphone the other for mac?? 4) Do I download apps from app store to my mac just like iphone?? 5) Is there any apps or whatever that is a must have? 6) Is there any accessories or whatever that I should purchase (I purchase the apple care) Thanks in advance, and any advice is greatly appreciated for a Mac idiot like me~!