The 100 Best Young-Adult Books of All Time We’re living in a golden age of young-adult literature, when books ostensibly written for teens are equally adored by readers of every generation. Most Popular Authors in Teen & Young Adult Books. 1. J. K. Rowling. Most Popular Books in Teen & Young Adult Books. Harry Potter Paperback Box Set (Boo Harry Potter and the Sorcerer's Stone. Harry Potter And The Goblet Of Fire. Harry Potter And The Order Of The P.