Today's APress deal of the day at
http://www.apress.com/9781430228387 is Pro Drupal 7 Development
"
Pro Drupal 7 Development is geared toward professionals who
need to deploy and customize Drupal. This book delves deep into the
internals of the Drupal 7 system and teaches you everything you need to
know to deploy a highly customized and optimized Drupal installation."
