In general I would say that you get out of college what you put into it.
So don’t expect professors will come after you for homework. Read the syllabus and keep up with what is going on.
If you have an issue (bad grade, homesick, illness, boyfriend/girlfriend problems, etc) find out what campus resources there are and use them! And if you don’t know, ask your Dean of Students or a trusted professor. I read so many stories about people who fail out and they never use any of the resources of the college.
Take advantage of what your college has to offer besides classes…leadership, research, cultural, & recreational opportunities.