I don’t know about a book, but Mike Ekeler did write a letter about the process leading to his recent hire at Georgia. He sounds like a classy addition to the staff.
“… Georgia’s just going to do what it’s going to do to win ballgames. Whether that’s passing the ball or running the ball or doing both. It’s kind of simple: whatever way to win ballgames.” — Charlie Woerner, The Athletic, 12/4/19