Percy Jackson & the Olympians
Percy Jackson, I believe, is way better than Harry Potter. Percy has gods after him and monsters. Plus, he has to rely on his swordsmanship and skills. Harry has magic.
It is helpful for understanding Greek mythology, and the story plot is more interesting than HP. (Cause I really love Percy jackson, and I'm a fangirlXD) Demigods(especially LEO VALDEZ) are hot!!LOL