Drupal Books

From Du Vient Trang's site.

I've praised and spoke highly of this book but what about the cons? the only thing i was a bit annoyed about is why it didn't tackle or provide some examples about preprocess functions that exist in Drupal theming layer? Perhaps, it requires a more in-depth knowledge of PHP to utilise the power of preprocess functions that allow a developer to setup variables to use within the template files (.tpl.php) and this book isn't aim at developers seeking a more advanced level of theming.