You survived freshman year, congratulations. Sophomore year brings some new challenges but nothing difficult. Beware the "sophomore slump," as well as Sophomoritis.
On-Campus vs Off-CampusEdit
Basically, people get through their first year of college and think "that wasn't so bad! I can raise it up a notch." So they take 19 hours and start doing a lot of extra-curricular work. Halfway through the semester they realize it's too much for them and drop a bunch of classes. If they realize it too late their grades suffer because of the work overload. So make sure that kind of work schedule is feasible before going with it.