Bars:
- Get drunk beforehand, and buy a drink or two while you are there otherwise your wallet will be hurting.
- Treat it as your break from school and be happy - there's no reason to be in a shitty mood, get in a fight, the list goes on. Just have fun with your time off.
- Don't buy a drink for your hot-ass friend who just stopped by to talk to you for 15 minutes, buy a drink for the girl that you went out with and you've been hanging out with all night.
- Always be wary of birthday shots, most of the time they are going to be fucking awful going down (hot sauce, multiple shitty alcohols mixed, bits of cheese/food... I do not miss those)
School:
- You're there to learn, get off the internet, video games, tv, whatever distracts you and learn something.
- Be polite to everyone you meet - even if the only time you see them is in passing, a smile, wave and short conversation will make your midterm hell a little better.
- Professors aren't trying to ruin you, a lot of them are really nice people.
- Watch out for those professors who value their personal achievements so much that they write all of their questions based on research or papers they have done. I took a financial engineering course, essentially trying to solve incredibly difficult questions with little exposure to them and found that most of them came from financial/mathematical research my professor had done- what a cocky dick.
Living:
- As everyone mentioned, you will be recycling clothes like none other. Laundry gets done once a month.
- Buy a lot of deodorant, toothpaste, and towels. Its a guarantee that more than once a semester you will wake up late for a class with the taste of throw up in your mouth from drinking the night before with no time to shower. As well, you better hope that shitty towel you thought you'd never need is balled up in the corner full of cleaned up vomit- at least you cleaned up the night before.
- Don't host parties, host pregames. Everyone's still getting drunk and therefore won't fuck your place up.