You should read The Speaker by Traci Chee (out in November! summary is of the first book)
Once there was, and one day there will be. This is the beginning of every story.
Sefia lives her life on the run. After her father is viciously murdered, she flees to the forest with her aunt Nin, the only person left she can trust. They survive in the wilderness together, hunting and stealing what they need, forever looking over their shoulders for new threats. But when Nin is kidnapped, Sefia is suddenly on her own, with no way to know who’s taken Nin or where she is. Her only clue is a strange rectangular object that once belonged to her father left behind, something she comes to realize is a book.
Though reading is unheard of in Sefia’s world, she slowly learns, unearthing the book’s closely guarded secrets, which may be the key to Nin’s disappearance and discovering what really happened the day her father was killed. With no time to lose, and the unexpected help of swashbuckling pirates and an enigmatic stranger, Sefia sets out on a dangerous journey to rescue her aunt, using the book as her guide. In the end, she discovers what the book had been trying to tell her all along: Nothing is as it seems, and the end of her story is only the beginning