As is a good night sleep. So at the risk of sounding mother hennish take care of yourself so that you can make the most out of your college experience. If you do get sick or have to miss a class try and get someone to tape the lecture for you. That way not only can you get someone's notes, but you can hear the lecture yourself. Take advantage of the college culture.
College is a great place to experience different cultures, viewpoints.
Go to a play, ballet, opera. Hey you may not like them, but then again if you have never tried how do you know. College is your best chance to expand your horizons and test your limits. Finally, but by no means least important is note taking. Notes are simply meant to be a tool to help you remember the key points of a lecture.