Maybe some of you already know about this. But I just discovered it and wanted to share with everyone.
If you are looking to buy, sell, or rent textbooks for your college courses or just looking for a new book to read, I highly recommend:
www.bigwords.com
I just saved over $200 on my textbooks by buying through there.
The site gives you links to various online stores with the books you need. you can buy new or used, or rent the textbooks.
The only drawback is that if you want the best deal, you have to sign on to whichever site has the cheapest book. You also have the option to buy from just one store (not always the best deal).
For example I bought my 5 textbooks from 4 different sites, but paid about 150% less than if I would of bought at school.