1. If your hallmates are a horrible bunch of idiots who you have absolutely nothing in common with, don't despair. Societies are the best way to meet new people who are just like you. Most of my close friends I met through Warwick RAG (Raising And Giving, normally involving animal costumes), and I don't plan on having any contact with the idiots I spent my first year living with. It may seem like everyone's best friends with their next door neighbour, but things do change.
2. Don't worry if you don't have people to live with at the close of term 1. There are people I know who have literally just nipped back up to uni a few days ago to sign a housing contract with friends - you won't be homeless.
3. Do try to go out as much as you can in the first three or so weeks, but don't be an idiot about it, either. Try to attend every lecture and seminar too, as there's a lot of foundation stuff drummed into you at the beginning that can be vital.
4. Talk to *everyone*. Now's the time to make as many acquaintances as possible. If they completely ignore you then it's their fault for being so antisocial! Who knows, that random person looking lost at the bar might turn out to be your new best friend.
5. Seriously, don't worry about not having a 'group'. Warwick's massive. Chances are you'll find some people just as strange as you are.
6. Do something mad. If you've ever wanted to dye your hair neon green or completely change your style or even just crossdress for a week to see what it's like, uni is the time. I have the maddest hair out of anyone on campus, and I never get a second glance - you could run through the piazza at 3 in the afternoon wearing only a toga and purple mullet wig screaming the first act of Hamlet in German and the most you'd get are some mildly amused glances.
7. Don't take Nice Things. They will get destroyed.
8. Take it easy, but not *too* easy. Do your work, go to lectures, and you won't be pulling your hair out when it comes to exam time.
9. Long distance romances *CAN* work, if they're the real deal. The first term is always hell, but once you come home for Christmas it becomes obvious if it's worth holding on to or not. They're not easy, so if it works then you should be proud, but if it doesn't then chances are it wouldn't have survived much longer anyway.
10. Have fun! These are the wildest and most carefree years of your life. So yeah, hitch to Dublin on your free weekend or spend your £50 of weekly alcohol allowance on a skydive instead. You'll never have so many crazy opportunities as you will for the next three/whatever years, so take advantage of them!