AC Bookstore - Used

I love used textbooks. They have the answers circled and they're cheaper. But this semester has been so shitty. My insomnia is worse than ever.[check posting time] and I have slept in all of my classes at least once. I'm registered for 16 hours but i'm only taking 12. The other class is an online course that i already haven't participated in. I have to drop it. ughh. i hate dropping classes. but I need to buy a calculator but i don't wanna. but i'm gonna. other than that everything else is going good. <3 davey