I'd be a bit cautious about going to college with an unfamilar OS. It may be a great way to learn it's ins and outs, but it may also be a great way to give yourself a tremendous headache. I've been intrigued by the OS X for a long while...
Google is your friend.
1985Company introduces the first computer system of its own design; the Turbo, featuring Intel 8088 processor running at eight megahertz
1989Company introduces its first notebook computer