I need More Books. Help !? :)?

I am a book worm, and am running out of books to read and need to know if anyone knows of any books i could read. I read teen novels like Pretty little Liars by Sara Shepard; The Lying Game by Sara Shepard; Twilight by Stephanie Mayer; Thirst by Christopher Pike; Vampire Academy by Richelle Mead; Beautiful Creatures by Kami Garcia; Crank. Glass, Impulse, Burned, and Identical by Ellen Hopkins and am currently waiting to read her other sequels; and multiple other with the same types of styles which is mostly teen fiction(realistic, or not) literature. I like my books with a little mystery, or heartache, or bad decisions, or mythical stuff. Do you have any suggestion that i would be able to purchase at wal-mart, books a million, or k-mart? thanks :)