I pay for everything in cash, I don't like having the temptation of a credit card and as i'm a student its just a bad idea to risk the debt so i don't bother.
Others may not agree, but I really suggest you get a CC as a student. Back when I was in school (yikes.. it's been a long time) I received a MasterCard with I think it was a $500 limit.
Not only does it teach you to manage money, it also is a great building block to start building a credit score. This is important down the road for purchasing bigger ticket items such as cars or even a house.
I use mine as "virtual cash." I only buy what I can afford, never carried a balance.. paid it off every month. I try to use my Discover Card whenever I can. Over the years, it's paid for several vacations just with the cash back alone!
--rob