Education of a Coach is a must-read. Halberstam was one of the great writers of the century IMO.
Patriot Reign is not nearly as well written (almost nothing is) but it's a fun read.
I agree, PJ. When we consider books about the Pats, there are really two categories: "The Education of a Coach by David Halberstam" and "Everybody Else."
I'd put Michael Holley's "Patriot Reign" at the top of the list of "Everybody Else," but with due respect to a good guy who is knowledgeable about both the NFL and the Patriots and who writes pretty well, he isn't in the same league as David Halberstam.
I've given Halberstam's book on Belichick as a gift to some of my academic/intellectual friends, who wouldn't give the time of day to other books mentioned in this thread and who don't understand how I can be such a rabid fan and follower of the NFL and the Patriots. Two of them have told me that the book gave them a completely new perspective on the world of the NFL and they've actually started following the Patriots.
There are many reasons that it's sad that Halberstam died relatively young (73), but, in particular, the fact that he passed before he could do a follow-up book or, more likely, lengthy article on Coach Belichick, based on interviews with him, post-Spygate is particularly unfortunate.
I don't know whether you know it, but Halberstam died in a car accident on the way to do an interview with Y.A. Tittle for a book about the 1958 NFL Championship Game...the game that most agree gave birth to the Modern NFL. I would love to have been able to read that book! RIP