Got my new MacMini today. My first!! It set up like a champ. No problems at all. I have many iOS devices and am pretty much an Apple fan. My question has to do with logins. I bought this computer for my wife and set it up with her Apple ID. Now I see I can login as a guest and not disturb her stuff. So, can I set up a separate login using my Apple ID and have a place to call my own, without messing her up? Understand this question is the result of mixing up contacts on a 3GS, which I've never lived down.