This book is the most comprehensive guide to Drupal 7 CMS by the Drupal community. It covers all the capabilities of this system, talks about the new features that appeared in the 7th version and will be useful for both novice developers and experienced Drupal specialists. You will learn how to quickly create sites by configuring free system extensions (modules), how Drupal projects are planned and supported, how to develop your own design themes for this CMS, and how to write new modules that expand Drupal functionality.