Run your feet off. Ease yourself out of run/walk combinations and get solid miles in. Getting a good stamina base will leave you one less thing to worry about since going back in, you want to worry more about technique than anything else. Making sure you got the basics. Get used to boring repetition also, throwing a few kicks every once in a while doesn't do you much good. If you're broke, I suggest doing calisthenics for now. I'm a broke college student too, I know how it is. Pushups/situps (and its many sister exercises), pull/chinups, dips, bodybuilders, squats/jumping squats, and anything else you have in mind. Once you have stamina, mix in speed intervals to your running workout, 2-3 times a week, so you can rebuild your anaerobic base also.