I college is a bit like highschool, except there is a lot more freedom. You choose how many classes you take, at what times, the subject (for the most part) etc. The workload may be more or less than highschool, but that's all relative - for me, I feel like it's a lot less.
Right now, I'm not in school, but I'm doing and internship and independent research for credit towards my major, so it's kinda like summer classes, but, not really.
Eh, all you have to do is obtain fragments, but if you can't find anymore pointers then I think you have to wait until 100AF's version of Bresha Ruins is unlocked. How far in are you with the main storyline?