I rarely write reviews, because opinions of a faceless stranger means nothing. In this way, this is more of a venting than a review. Take what you wish from it.
This book possess information, but reads like a japanese history version of Wikigolf
[A game where you jump from hyperlink to hyperlink to see how you can get from one page to another in the least amount of clicks]
I would say it talks about people who happen to be "samurai" versus the actual samurai way of life.
You can save yourself time and watch a 30 minute history from early Japan to the Edo Period on YouTube and get the same amount of information.