The books on this list are broken down into categories (for kids, historical fictoin, sci fi, etc). Definitely give some of them a try!!
This site will recommend similar books to what you have just finished! Be careful though, this site won't necessarily offer more challenging books. Always strive to read something just a little bit harder!
Use the cuyahoga county library website to check-out ebooks, read up on popular literature, or request hard copies of texts.