Use these links to find the reading level of a book.
Books Should Be Free Teen/Young Adult listing of free public domain audio books and ebooks.
Lit2Go a great collection of free literature that also includes a PDF of each selection.
Open Culture offers many classics in a variety of audio formats.
LearnOutLoud free audio library. Other links on the site offer retail audio books.
DigitalBook has is very easy to navigate and searches by more genres than many of the other sites. Check out genres like Teen, Chick Lit, Comedy, etc.
Guys Read Created by author Jon Scieszka, Guys Read is a web-based literacy program to help guys find "stuff" they like to readTeenSpace in the Internet Public LibraryTween Reads from BrightlyWhat Should I Read Next? A site that gives you book suggestions based on your inputYour Next Read Another site that gives you book suggestions based on your inputBest Fiction for Young Adults from the Young Adult Library Services AssociationYALSA Book Finder from the Young Adult Library Services AssociationNo Flying, No Tights a website reviewing graphic novels for teensStuff for the Teen Age the best in teen books and media from the New York Public LibraryReading Rants! Recommended reads that go beyond the "typical" teen booklist