Sick of reading the first in a trilogy and getting absolutely no answers? Give Wasteland a try, I'm not promising that ALL answers will be given, but enough so that you won't be left totally hanging until the next installment comes out.
From the publisher: "Welcome to the wasteland. At fifteen, the citizens of Prin marry. At seventeen, they reproduce. And at nineteen, they die. Esther thinks there's more to life than toiling at the assignments - Harvesting, Gleaning, Excavating - day after day under the relentless sun, just hoping to make it to the next day. She doesn't care that her best friend, a variant, is considered "the enemy." She doesn't care that Levi, who controls the Source, is the real enemy and might send his Taser boys after her if she makes one wrong move. Then Caleb shows up. Could there be another way to fight for survival?"