oh.

If the drink is the color of a sharpie....
don't drink it.
If it reminds you of a sharpie, or think a sharpie should be made in that color...
don't drink it

DO go to frat house BBQ's (bring a friend or two). Don't stay too late, but do socialze.
DO get to know your RA. They will be your BFF.
DO establish boundaries with your roomie. My freshman year was amazing because my roommate and I were very close. YES YOU CAN BE FRIENDS WITH YOUR ROOMMATE. Just establish that there is a point where you can sit in a room and not talk and not have it be awkward. Likewise, you can break silence with hilarious, random things and both laugh about it.
DO go to campus events. Movies, bowling, dances. Do it. Seriously.
DO keep a little flashlight in your bag if you're going around after dark. The little, high-powered ones? They made me happy.
DO get a little reading light. You know, the ones you can clip onto the book? If your roommate is asleep and light will disturb them, that's really useful if you want to stay up later. Also nice for when you wake up in the middle of the night and have to navigate the dormroom.

“There's a lot about discovering who you are and how difficult that is, and it never stops.”
- Libba Bray