I went away to university (about 3 hours from my hometown) and absolutely loved the experience! If you're living in residence, I would definitely recommend brining a small bar-fridge. I used this to stash my extra insulin cartridges, juice, milk, etc. I would keep granola bars, cereal and dried fruit in my room if I didn't have time to get breakfast in the cafeteria in the morning.
Another living-in-residence tip is to keep a bag with your monitor, insulin & glucose tabs in a bag by the door at nighttime. The residence hall I lived in had its fire alarms go off on a fairly regular basis (usually at 2am when students were trickling home from the bar). When the alarm would go off, every single person in the hall had to go stand outside until the fire truck came and looked the place over. I once had a low sugar in the middle of the night while this was going on and nothing to treat it. Not fun. After that, I always quickly grabbed my monitor and some sugar before leaving my room for a fire "drill."
During university, I had two endocrinologists - my 'childhood' doctor and a new endo in my university town. I would recommend this because, with all the changes of moving away and starting a new school, it's nice to keep your usual endo even if you only see him once a year.
Other than that, try to eat well and try to eat proper portion sizes (cafeterias seem to dole out huge amounts of food!). And, have way too much fun and learn way too much! You're embarking on a great stage in your life - enjoy it!