Owl Recommend is a feature at Owl Read It where we try to help you find your next great read.
I love both of these series (Harry Potter and Percy Jackson and the Olympians). They are not quite YA to start with (both are 12) but they certainly become so as Harry and Percy grow and learn. Whether they were YA or not, they are definitely worth the time - but I am sure most of you have read Harry Potter already. If you are looking for a kick-butt, smart-mouthed Potter with a sword and Greek Gods, Percy is for you! :)
Harry Potter and the Philosopher's Stone by J.K. Rowling
The Lightning Thief by Rick Riordan