I actually enjoyed College Chemistry over HS Chemistry. I didn't take many sciences classes in high school as my focus was more towards history (and it still is) so the entry level classes I took in HS never really got into the nitty gritty. It wasn't until College that we were actually able to be "hands on" and I did much better in the class that way.
My best piece of college advice is to show up to all your classes. Be on time, courteous & polite to your fellow class mates and teachers. Get involved and everything should be gravy.
I should know I'm on year 6 out of 7