Uhh some that I learned:
-keep your syllabus handy, in high school they're useless but in college they're like a golden book with all your due dates and stuff
-keep a calendar of all the readings you have to do, your professors won't remind you to do those but will ask you questions about it (a lot of your readins will be listed on the syllabus too lmao)
-there isn't as much hw in college, so exams and essays are worth a crap ton, just keep that in mind
-don't be hesistant on emailing a professor about a question you have, they're super chill as long as you actually checked the syllabus for answers first
-don't procrastinate, really, it makes your life way easier if you don't