Wolfram alpha is also fantastic for math. Mailinator is definitely the best throwaway mail account site. You can put any email@example.com, then without even going to the mailinator site, sign up. If you need to verify, you can go to the site.
Compare College Textbooks | Used Textbooks | SlugBooks I just barely went here, and it is awesome. I got 4 of my textbooks for $30 all together, when one was that much at the SUU bookstore. I'm doing a happy dance.
Reading corner in little girls room! We used plastic rain gutters from Lowes. Totally cheap and the the books are easy to reach and choose this way. You need to buy the long gutters and cut them to size. You'll also need end caps, and corner pieces.