If you are really into Greek mythology, especially gods like Poseidon, and Zeus, and Hades, than this book is definitely your style. It introduces the prospect of Oracles, sons and daughters of gods, (demigods). The prospect of true myths, and people and places from the Greek myths. All of them are real in this book. Percy Jackson is the main character (obviously) and he often gets into trouble. He definitely is way more reckless that Harry Potter, I can tell you that much. There are five books in the first series, (Percy Jackson and the Olympians) and five in the second series(Heroes of Olympus). Have fun reading it, and get lost in this book!