On Thursday, June 14, 2012, Jen Kramer will speak on Joomla Access Control Lists (ACLs):
Starting with Joomla 1.6, Access Control Lists (ACL) add to Joomla's flexibility and power, moving it closer to the realm of an enterprise CMS. Unfortunately, ACL can be tricky to understand and configure. Jen will walk you through how to get the most out of ACL on your site, including front-end configuration of access levels and back-end configuration of the administrator interface.