any website that sells second hand teaching manual for text books?

Dec 21, 2013
I have enrolled in a Physics paper semester one, and the textbook, like most other text book, only give solutions to some problems and not others, which make it difficult for me to practice.
most publishers usually publish a teaching manuals that could usually only be purchased by a teaching stuffs, in it, it not only has all the answers , workings as well as explanations.

I am wondering if you guys know a good website where someone might be selling their second hand teaching manual for text book?