Bruce Feldman’s new book, The QB: The Making of Modern Quarterbacks, examines the science behind sports’ most complex position and the growth of the private QB coaching business.

The book focuses heavily on the work Trent Dilfer is doing as part of Nike’s Elite 11 Academy to train and mentor high school QB’s and on Johnny Manziel’s preparation for the 2014 NFL draft.

At first I was a little skeptical about the focus on those two because I was hoping for more substance on what makes the current crop of soon to be Hall of Famers great – Manning, Brady, Rodgers and Brees. But the book touches on some of that and Feldman does a good job showing how becoming a truly great QB – from high school to the pro’s – is a year round job that doesn’t stop once the season is over.

The best QB’s work throughout the offseason with private QB coaches, and it’s become a lucrative business for the coaches doing it.

Feldman’s examination of these private coaches, showing how each became QB coaches and their unique methods, is probably the most interesting part of the book.

With Manziel’s recent struggles towards the end of the 2014 NFL season, the fly-on-the-wall access that Feldman was granted by him and his QB coach makes this book even more relevant. It’s easy to see why Manziel fell apart as soon as he reached the NFL.

The QB is a great read for anyone wanting to learn more about the nuances of the position and for parents of young QBs. The money, time and preparation spent on developing young boys into QBs these days is eye-opening.