I am working through the book right now. It touches a lot of things, albeit superficially, to get you up and running. I have done plenty of deployments in the past so I do not need half of the book, but it has been helpful to put into context holes in my education (SELinux, Systemd, firewalls, etc.)

@strzibny, it would be great if you can put some curated links or references at the end of the book so the reader know where to go if they want to go deeper in that particular topic. It would really improve the value that some of us get from the book.