Note About the Modules Used in This Book

Drupal is constantly moving and its community-contributed module world is constantly shifting. The source code for the book provides the versions that the chapters were written with, and as time moves on, the versions available on Drupal.org (http:// drupal.org) will most likely change. Sometimes changes don't dramatically affect how things work, but other times they do. For many chapters, the hands-on sections will apply for a very long time or change so little that they will still be quite easy to follow. Even if the user interface for a module changes, after using this book and walking through various configurations, you should be equipped to explore modules on your own. In addition to the specific hands-on "recipes," you will also learn tips and best practices for how to "cook" generally, that is, how to learn about modules on your own.

Also keep in mind that the Spotlight sections, which discuss module features and comparing modules, along with Appendix B, which discusses how to evaluate modules, provide a good foundation for you to make these evaluations on your own. You can do your own comparisons as newer modules come out and make the best decisions for your use. This book is intended to not only be a guide but also a springboard for your own mastery of the Drupal contributed project world.

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