hi everybody I have an iPhone and iPad, but I never have a Mac computer before, I am thinking about whether going for a laptop Mac (Macbook air) or a small nice box Mac Mini. I don't know, which one is relatively better at their prices? I don't have a fixed budget but I don't like to waste things. I don't play games at all but I will want to run the computer continuously on long term basis, probably 24 hrs a day, 7 days a week. Shut down is possible, but I don't make it a habit. In that case I am concerned if the heat dissipation is a problem for Macbook or Mac mini. a little bit more silly question I hope you don't mind - how does the user of Mac mini or macbook air normally store their files? Can I connect my generic 2.5 or 3.5 HDD (by seagate or western digital) to a Mac computer?? Does their file system or protocol work well with each other? Or does Apple sell their own portable drive?? What else one may have missed when changing from a PC to a Mac? Thank you very mcuh!!