Like many said, read Rick Riordan's Percy Jackson and the Olympians/Heroes of Olympus. Divergent and The Mortal Instruments are both good, as someone else said, although both are very romantic, so if you aren't into that kind of stuff you may want to skip those. The Hunger Games is also pretty good. If you like older books maybe the Chronicles of Prydain by Lloyd Alexander. Lois Lowry's The Giver Series is good, and obviously Harry Potter is super popular. It's kind of hard to recommend books to people you don't know, considering they could be 50 and I'm recommending Middle Grade and High School books, but over all these are good books.
