The book aims to get people with little to no knowledge of Drupal or JavaScript up to speed with creating really awesome functionality, really fast. In fact, its title almost belies the breadth of its scope: although the use of jQuery in Drupal 6 is the one topic that it covers exhaustively, it doesn't skip over any of the basic tools or concepts required to get going with Drupal, and so it would work pretty well as a first Drupal book for any aspiring front-end Drupaler. It covers everything from the ultra-utra-basic ("what is CSS?", "what is a Drupal block?") to Drupal JavaScript Behaviors (and everything else in drupal.js), to JavaScript Theming, to AJAX, to building modules with AJAX functionality, to jQuery syntax, effects, and even writing jQuery plugins!