I've picked this book for the second book club meeting. It is short and publicly available. The book provides interesting insight into the company, which is successfully operating with flat structure for 20 years. It's so different so it's hard to believe it.
The most surprising part for me was about hiring as it is considered the most important task in the company. I agree with such approach, but unfortunately it's not so common.
Few other things I've liked: T-shape people, peer reviews, cabals, stack ranking and compensation.
The book gives a good overview of the culture. I really want to know more details how everything is setup. That's where the real insight.