I have no idea where to start looking and I could use some suggestions!
I haven't really read a book for enjoyment in about 10 years(I'm 30 now), here's what I remember really enjoying:
The Monstrumologist by Rick Yancey
Enders Game by Orson Scott Card
Inkheart by Cornelia Funke
Artemis Fowl Eoin Colfe
City of Ember by Jeanne DuPrau
Tunnels by Roderick Gordon and Brian Williams
by Zeliose