It's 5 to midnight and we're just wrapping up. Mr Kurund says that I can't go to bed until I've written this post, so...
Participating in the second book sprint is just as fascinating as it was the first time around, but the dynamic is definitely different. Having a book in place already makes a big difference - there's no panicking that we'll end up with the sections half finished, and it is easier to cover components when a lot of the design decisions have already been made. Having already written sections on the components is especially helpful when covering new components.