Make sure you have your weetbix.

Take some tuckshop money cos you will want to have coffee with your new uni friends.

Smile a lot - you will meet lots of people, don't be afraid to say "Sorry I've forgotten your name".

Oh - and do yourself a Big Big favour - go to the library and book yourself in for their how-to courses - if you do it now you'll be a couple of months ahead of everyone else who will leave it until mid-semester when they are in a panic about their assignments. Never be scared to walk up to the Ask Here or the Reference desk, that's what the staff are there for!