Book excerpt: You know Drupal is the best web publishing platform on Planet. You have started using Drupal 7, built a site or two, and maybe even written a module. But if you don't know Drupal's essential modules inside out, you don't know Drupal. With this book you will learn: * how to rewrite fields and combine contextual filters with Views * how to set up Flag and access its data using views relationships * how to automate and schedule customized reactions on your site using Rules * how to use Page manager to master contextual information on your site * how to use Panels and Views content panes to display the right data in the right places.