Need to learn to shop around instead of just paying the exorbitant prices at the campus bookstore. I bought used textbooks online (Amazon, eBay, etc.) and about as often as not was able to sell them back to the campus bookstore for roughly the same price or sometimes even more than I paid for it. As others mentioned, international editions are a good way to save money, although sometimes they're laid out a bit different than US editions. Some classes may list a text as required but then it doesn't actually end up being used much, you can wait for the first day of class or contact the professor before class begins to ask whether the text is really needed. Also there are sites out there that offer textbook rental, which tends to be a lot cheaper.