Help....I need some ideas of what book to get

1)Percy Jackson & the olympians The Lighting Theif-by-Rick Riordan
2)The Maze Runner-by-James Dashner
The best one for a 12 год old boy might be The Maze Runner I enjoyed it(Eventhough im a girl it will still entertain a boy its not girly или anything) It exciting. Here are two websites that has a summary of what the book is about and a review of the book: link and link
Here is a website that also has the summary of Percy Jackson & the olympians The lightning Theif and it has a review too: link Hope this helps!!!!

The "How to train your dragon" series by Cressida Cowel is pretty good.

Get
1) His Dark Materials Trilogy by Philip Pullman
2) Inkheart Trilogy by Cornelia Funke
3) The Owl Service by Alan Garner
4) The Name of This Book is Secret by Pseudonymous Bosch
5) The Chronicles of Narnia series by C.S. Lewis
6) War Horse by Michael Morpurgo
7) A Wrinkle in Time by     Madeleine L'Engle
8) Series of Unfortunate Events series by Lemony Snicket
9)The Spiderwick Chronicles by Tony DiTerlizzi
10)The Seven Professors of the Far North by John Fardell

Hope this helps! :)