Using Drupal Book Review

I am new to Drupal, but have been developing Orchard CMS Websites for quite some time. I picked up a copy of Using Drupal as part of the O'Reilly Blogger Review Program to better understand the similiarities and differences of Orchard as compared to Drupal. I touched upon those similarities in a separate blog post, Orchard CMS Inspired by Drupal, and in this post I mainly want to talk about the Using Drupal Book itself.