A person who would like the Percy Jackson series (like me) would have to be interested in Greek gods and mythology.
Percy Jackson's hero is Hercules. As told in the 'Sea of Monsters' book when he is talking to Hermes. Not because he likes his strength, but because Hercules has more bad luck than Percy, which Percy didn't think possible.
At first, no one likes him, but when he has a successful quest, they all revere him.
The 39 Clues
Percy and Annabeth do fight sometimes (rarely), and usually, their fights are about something small, for example, they have fought about Rachel before (4 Percy Jackson book). Annabeth and Percy do fight though rarely, most times they are okay with what each other thinks.
Percy likes Annabeth. In the beginning of the series he had a huge developing crush on her and was jealous of her interest in Luke, Percy's rival. It takes a while but Annabeth returns Percy's feelings.
Annabeth's feelings are not really expressed during the Lightning Thief, but in the Battle of the Labyrinth and the Last Olympian it is clear that she likes Percy.
Percy Jackson is the main character in the Percy Jackson and the Olympians series.
Percy Jackson is the main character in the 1st Percy Jackson book.
Percy Jackson's mother's name is Sally Jackson.
The stories are: 1. Percy Jackson and the Sword of Hades. 2. Percy Jackson and the Stolen Chariot. 3. Percy Jackson and the Bronze Dragon.
They never outright said it but they hinted towards that twice in the series.
In the movie it was Logan Lerman.