I recently did a technical review for “Mastering Ansible” book by Jesse Keating. This book covers usage of Ansible for automation with practical examples. If anyone is interested, please look at the book. Pre-requisite is to have basic Ansible knowledge.
Ansible is similar to configuration management tools like Chef, Puppet. Agent-less architecture and short learning curve has made Ansible very popular in recent years. I have covered Ansible in few of my previous blogs. Ansible documentation is also pretty good to understand the basics.