Does anyone know where I can download free college books from?

try piratebay site. ton of torrents on ebooks, movies, softwares, games and so on. You can download everything for free. but you must download it using torrent

since piratebay have been down quite a while. don't simply type its main url (thepiratebay.se). go to proxybay.la and click one of the piratebay link to go to its proxy site.