Also, if you have to take any history classes, there are a ton of free resources online that have complete historical texts, so if you ever get assigned something like St Augustine's City of God or Thomas Payne or Francis Bacon, etc., know that those books are probably published online in their entirety between Project Gutenberg, the Medieval Sourcebook, and Christian Ethereal Classics. I like to have the paper materials, but those things are damn useful when you're writing papers with the search tools as well as copying and pasting, and if you're in a financial pinch, you don't have to buy the book.