Pyramids is #7 in the Discworld series by Terry Pratchett. it's not my favorite so far, but I'm still looking forward to the next one. The Younger Son gets these after I'm done to add to his growing library, and he's also enjoying the series.
from the back of the book:
Unlike most teenaged boys, Teppic isn't chasing girls and working at the mall. Instead he's just inherited the throne of the desert kingdom of Djelibeybi — a job that's come a bit earlier than he expected (a turn of fate his recently departed father wasn't too happy about either).
It's bad enough being new on the job, but Teppic hasn't a clue as to what a pharaoh is supposed to do. After all, he's been trained at Ankh-Morpork's famed assassins' school, across the sea from the Kingdom of the Sun. First, there's the monumental task of building a suitable resting place for Dad — a pyramid to end all pyramids. Then there are the myriad administrative duties, such as dealing with mad priests, sacred crocodiles, and marching mummies. And to top it all off, the adolescent pharaoh discovers deceit, betrayal — not to mention a headstrong handmaiden — at the heart of his realm.
SFReviews.net says, "Overall, Pyramids is a funny entry in this enduringly popular series". It won the British Science Fiction Association Award.
I have also read these others in the series:
#1 The Colour of Magic
#2 The Light Fantastic
#3 Equal Rites
#6 Wyrd Sisters