Tax-free books-Amazon.com

Tax-free books-Amazon.com

I'm starting college this fall, & at orientation, they told us that (thanks to Obama) anything required by a professor could be purchased tax-free, including text books. I'm about ready to start buying books, & I've gotten what I can on craigslist & other local sources, but there are still a few I need. I've found copies of everything on Amazon.com for almost half-off the used price at my school's book store, but I'd still like to get the sales tax discount. I'm wondering if anyone knows how to do this, has done it, or if they lied to me & this is all bullshit XD I figured if anyone knew, this would be the place. Thanks!
Now some veggies.

Now some veggies.

Paste Tomatoes!

Paste Tomatoes!

Fern care

Fern care

1st time posting my room

1st time posting my room

Howdy, this is my room :)

Howdy, this is my room :)

Redid my room

Redid my room