Well Lass, obviously you, like me, have insomnia problems ;
I can't think of a lot I would have done or bought before 1L ... Well, actually I bought a lot of nonperishable food, shampoo, soap etc. in advance because I figured I'd run out of money (and I did.)
As for supplies, I have a whole bunch of highlighters and used a little color-coded highlighting system (I might as well just admit I'm a nerd, I never thought I was but, well if the shoe fits.) Oh, and get lots of binders for your class outlines and flag-thingies.
I take my laptop to each class, though there are some die hards who insist on handwriting (you should take paper as a backup regardless.) I have a rolly bag because I have a lot of back problems, but some people carry backpacks.
Wear whatever you want to school, but I don't suggest heels, because you will be lugging a bunch of heavy crap around.
I have CHRONIC insomnia, you know that DB
Okay, here is my question of the evening: How many classes did you have each week and what was the schedule? I know some people had classes that started at 9:40, but generally how long were you in classes each day?