Study. Study. And study a little bit more.
I went to a big school and we always had tons of little events during finals week to help keep students going. For instance, the largest classes (general chemistry, orgo 1, pre-calc, etc) would hold study/review sessions with all of the professors in our student center. You could drop in and get help or just listen. They would also bring baby animals to our library so we could pet them. Free massages in our health center. Things like that. Different student organizations would also set up tables and pass out snacks and bottles of water.
In terms of actual studying, finding a spot in our library was near impossible. I used to find unlocked buildings and study in one of those instead. Plus it was quieter and I wasn't sharing wifi with everyone. May be worthwhile finding some places to study other than your library.
Stay healthy!! Nothing sucks more than being sick during finals week.
Otherwise, realize you will probably be stressed. Do whatever you can to eliminate other stresses during that time. If your final is in a different building, go check it out the night before so you know exactly where it is. If you drive to campus, give yourself plenty of time and arrive early. You can always chill on campus somewhere and review.
And once you're done, realize you'll do it 7 more times (and then go to dental school!)
Good luck!