I found this site today while searching for online study guides for literature. It has tons of books. As far as I can tell they are all FREE. I haven't had any strange pop-ups. You should check it out. http://www.gradesaver.com
oh my stars I was just online this morning looking for something like this... it looks great and looks like something I will use. I am printing of stuff already for a book we are going to do right away. thanks so much...