This book is so different from anything else I've read recently. If there is a typical YA, this is not it.
Alaya Dawn Johnson creates a futuristic world and just throws you in it. There aren't opening explanations of what happened (eventually you learn that they are post some apocalypse) or of the culture. It's told in first person, so I guess why would there be? But because of that, it took a while of reading before I really grasped what Palmeres Tres looked liked and how it functioned. Women are in charge, sexuality is fluid, art and technology are interweaved, and power is stable because of a caste system and sacrifice. June tells her story as if to a contemporary and nothing is over-explained.
I think this is worth re-reading.