> One more thing: be social

This is really important. I didn't appreciate it at the time. Get to know people in your classes, not just your roommate. Join a club, or check out greek life if that appeals to you. If you weren't very social in high school, now you're in a new environment. Nobody knows you, and nobody cares about high school anymore.

If you're introverted it can feel awkward but you're rarely, probably never again, going to be in such a diverse group of people who are all about your age and stage in life. Certainly not for four years.