So. The plot moves forward, and our band of four guys and a girl stir up some serious magic. Individually, the teenagers seek out those universally teenage things: figuring out who they are, where they fit in to the world, and what really matters to them. Collectively, they have weathered some storms and come out closer and more appreciative of each other. The plot begins to draw in, and you can see storm clouds on the horizon.
I'm not saying much concrete about the book on purpose, because this is definitely the kind of story to start at the beginning. And if you haven't yet, pick up The Raven Boys and settle in.