Drush for Developers - Second Edition by Juampy Novillo Requena

This book is a best fit for backend developers with a basic knowledge of Drupals APIs and some experience using the command line. Perhaps you already worked on one or two Drupal projects, but have never dived deep into Drushs toolset. In any case, this book will give you a lot of advice by covering real-world challenges in Drupal projects that can be solved using Drush.