Hi this is TC I am 10 years old and I have read the whole Percy Jackson series and Heroes of Olympus is my favorite. I read the books in the wrong order and I think it makes more sense. I read the books in this order; Son of Neptune, The Lost Hero, Mark of Athena, House of Hades, the Blood of Olympus. I loved this series because ONE I love the Percy Jackson series and TWO the books always leave you in suspense making you want to come back to read the next book. The main characters have unforgettable traits like Leo, he can summon fire at will, and Jason who can summon lightning at will and Percy can summon waves at will they all have cool things that they can do. The main characters are ; Leo, Percy, Jason, Piper, Annabeth, Hazel and Frank. Oh yeah and Coach Hedge is their “chaperone” and Nico is there sometimes. by reading these books, at school if I read all of them and tested on them in the same year I would have well over 100 AR points and mind you I started reading these at nine years old so if you want your kids to read this you should read it to.