I am buying all of my books online now, but I still need to take the second half of the language placement exam, so I don't know which Spanish class I will be in. What do you recommend I do about my books for Spanish?

Most likely, you will be placed in the class that you tested into for the online part of the exam. However, I think just to be safe, wait until you take the second part of the exam that Friday during orientation and see how you do before you buy any books. When you do find out where you've been placed, buy the books and definitely talk to your Spanish professor, making him or her aware of your situation :)

Feel free to ask me anything about SMC :)