Mensch : Beyond the Cones (2019) by Jonathan Harding is an interesting look at German football coaches and how German football is organised. Harding is a freelance journalist who writes about German football.
Harding talks to lower league coaches, coaches at the German school for coaches, various older, very experienced coaches and looks at why Germany now has a number of young coaches having success in the Bundesliga. Harding also looks at why the German National Team failed so dramatically at the 2018 World Cup in Russia. The book chapters are things like Philosoph, Erfinder, Lehrer and each chapter has a nice summary of the main point of the interview at the end.
There is a lot of discussion about the new wave of young German coaches like Jurgen Klopp, Julian Nagelsmann, Dominico Tedesco and Thomas Tuchel. Harding shows how the DFB has made an effort to not only train young players but also to train coaches and set up a system where they get Bundesliga jobs after suitable experience at lower levels. Harding contrasts this to England where importing managers has become the setup and there is little space for English managers except largely in the lower parts of the league.
Harding also points out how the English National Team currently has a young coach who is working out well.
Mensch is a very solid book that has a lot of insight from the interviews. For anyone interested in German football it's well worth a read. It has some interesting analysis of what happened to the German National Team. The book also has value for people interested in how to train and develop leaders in an incredibly tough environment.