I've been in college 10 years now and am getting my doctorate. My advice is to choose a major that you enjoy and will find interesting. It's easier to go to classes if you actually enjoy them. I only planned to get my bachelors but I loved what I was studying so much I stayed in school for the masters and doctorate. Learning how to study is important. Some people need flash cards while others need notes and study groups. My technique for studying was to be alone with my notes and I'd pacing back in forth while reading aloud my notes. Try different techniques out to see what works best for you.
Another tip: don't listen to people who say you need to eat ramen noodles because you are a poor college student. I did that and had some pretty horrible meals when there are other cheap food alternatives like macaroni and cheese. Learning how to shop for good/cheap food you can cook in a dorm microwave/crock pot is talent dorm residents need to learn.
The last tip I can think of is enjoy your campus. College campuses can be beautiful places. My best memories were sitting underneath trees doing my homework and striking up conversations with random people while waiting for classes to start. You can have a lot of fun on campus so find places there you can hang out and enjoy the scenery.