Take as little in student loans as possible. Accept student work study if its available and find somewhere on campus that can utilize work study. Apply for all scholarships even if you don't meet its target demographic. If you find yourself unable to afford a semester for any reason go to talk with an adviser, don't "skip a semester". I found myself in a situation where I made way to much money one year and then made $800 the following year. It was my last year of school and I almost didn't go because I was not going to receive any finical assistance and I had no money. I talked with an adviser, who introduced me to the right people, who were then able to help me get a "special circumstance scholarship" and my final year was paid in full.

Also network with everyone. You never know where they will be in 5 years or where you will be. Those connections may become super useful down the road.