I want to sell my college books, How can i do that?

i was wondering if there was a website thats reliable and safe, FREE and easy to use to sell my school books,

if anyone want my books that live in chicago ur free to answer and leave ur info,

Economics, Law, CIS introduction book, and moreI want to sell my college books, How can i do that?
There are lots of places to sell college books that are described below./