This post is written by Lily, my 11-year-old daughter:
Percy Jackson and the Olympians is a great series and I would recommend these books to everyone. In the first book Percy finds out that he is no normal mortal. He also finds his best friend isn’t human. Grover and Percy’s mother, Sally Jackson, lead Percy to a camp that is safe for him. At camp he meets his soon-to-be friend, Annabeth Chase. Soon after meeting her he gets a quest from the Oracle. In his quest he meets two gods, Ares and Hades. Read the book if you would like a story of friendship, fighting, mythology, and Grover.