There is no need to buy a book when you have a class or just want to learn something and then wont need it for future reference. Its much cheaper to utilize the power of the internet and rent it for as long as you want. You can do college book rentals at becksbooks because those are the most expensive and most students dont need to buy it just rent it. You can also sell some of your books to them. Check out the price comparisons to see how much you can save.