Hey congrats!
Advice:
1) Studying isn't the only thing to do in college, but it is "a thing" you should do. Make sure you spend time going to parties and in study groups.
2) Subjects that bore the fuck out of you now may be deeply and personally important to you years down the road. Having a minor grounding in something you may not see as useful or care about that much is easy in college, and you never know when a basic knowledge of something like philosophy or anthropology will enable an experience or personal growth you might have otherwise missed. So treat it as liberal arts even if you don't have to.
3) You'll never be around as many open minded people again. Remember though, they are almost all young, and therefor will be ignorant on some things. You can't have everything, but you can take advantage of being exposed to tons of different people, views, and socioeconomic backgrounds. This will never happen to you again depending on your chosen line of work.
4) Debt sucks, seriously, work hard to avoid huge student loans, eat crackers for some meals, have room mates, etc. Don't buy stuff you cannot afford on money you don't have. Even private student loans are non-dischargeable in bankruptcy, this is nearly the only kind of debt treated this way, so treat it as a very useful, but very dangerous object.
5) You are selecting instructors as much as you are selecting classes. Make sure you check their syllabuses, some things smack of lazy professors (e.g. high amounts of grade being dependent on being physically present is usually a bad sign). Ask other students, check any syllabuses they keep on file in the university library, and even check past years' tests (again: library), if you don't find these they are probably lazy and use the same tests over and over again.
6) University is not a trade school, if you want a trade school, stop now, withdraw your acceptance and go to one. I highly suggest if you were under this conception that you take a bit and consider what you want out of this, if the best thing you can say is "a good job" trade school will save you 10s of thousands of dollars and hand you several years of your life back as real work experience.
7) This last one is a personal opinion (more so than the others): any graduate degree that costs you money to pursue is not worth it. You should be payed to do graduate level work (you teach for it and do other things). If you have to pay for it, it is a sucker's bet. Yes, this now applies to law school too. The sole exception is medical school, and only if you intend to pursue a specialty and not general practice.
Thanks for the giveaway, I hope you enjoy your university life, it's unique and you only get it once:)