We are switching to Scrum at work. Although we get help starting this up and get training for it, I'm looking for some good books on the subject. Please do not post just a title, but also an explanation as to why I should read it.

Scrum seems like a pretty narrow field - better you should hit up wikipedia and see what they say about scrum and work from that

We have a tutor on site. I was just hoping that someone using it could me supply with a _must read_ book. So many titles out there, hard to find the right one to read.