Ok, this is pretty elementary and people will probably say, that's so dumb, but it makes my life easier so I decided to share.
I'm always on the run, especially since I work full time and go part time night. For example, I like to go to the gym and study, but I found it so hard to carry all big case books around and read while doing my cardio or weight lifting. Or if I go out to lunch and want to study while eating a burger, I hated having to carry around the books. So what I do now is, keep all my case books at my work, and xerox what I need for the week ahead. Then only have to carry the xerox pages so it makes studying on the run easier and also it's less stress on my back. The only negative is I have to spend 15 minutes xeroxing the pages but I think it's worth the inconvinience of lugging the books around, and back pain.