I’m committed to IU and am an incoming freshman. What do you wish you knew when you started?

I’m sure there are a million posts like this already but I figured I’d still ask. For context, I’m a Computer Science major from the Chicago suburbs. I’ve taken 12 AP classes/tests (I’m counting Physics C as 2, Mechanics and E&M) and have dual-credit for Calc 3. This is my first time moving out of state EVER. Like ever. I’m looking for any, and I mean *any* tips about college life that I should know before I move in on campus in August. Dorm necessities, study habits, anything and everything.

I’m planning on being in the Marching Hundred too, in case there’s any advice for that.