Loving this book so, so hard. Covers clans' (the 13, plus Caitiff and some antitribu--others are mentioned but more in relation to others, alas none of Saulot's get) beginning stories, histories, some alternate bloodlines and factions, merits/flaws, upper-level disciplines, and combination disciplines. Honestly, though, I've just been reading it almost like a novel. A lot of insight into the clans and a bit of their correlations between each other and even a little into relations with other supernaturals where it's relevant.