I leave my entry level MBP on 24/7, it sleeps when i'm not using it. Since i'm still fairly new to OS X, I don't know if I should be leaving applications open. For example, leaving iTunes open, but Command + H (Hide) it when i'm not using it. Same with Mail. I know there is a big debate on whether to shut down the computer when it's not in use, i'd like to hear what you guys do. I just want to treat the MBP well and not abuse it. Thanks