Recommended Book for Joomla!
I highly recommend you these books, especially "Joomla! Web Security" by Tom Canavan as it will help you to secure your #Joomla! site in an efficient way.
|Joomla! Web Security |
by Tom Canavan
Learning #Joomla! 1.5 Extension Development: Creating Modules, Components, and Plugins with PHP
From the same author "is your site ready?" Disaster planning, preparation and recovery for #Joomla! sites