Have a (sexy) prologue! It’s not necessary for understanding the main story, but utterly worth a read for the multiple kinds of fuckery, interrogation of humanity, female agency, and space-battles (naked newborn vs. space ship!).
Alternatively: hop straight into chapter 1.
Also: check out the series page. And the character bios/designs! And this sweet magazine cover. Be sure to read/listen to everything mentioned thereon (Awake, as per usual, is my go-to. Ugh, so good.)–plus the bits not on the cover (personally, I’m looking forward to devouring the second part of Dinner Ditz [divorced dad destroys dinner!]):