Over at dudertown.com you can find a nice set of articles with screencasts of howto’s / best practices when it comes to implementing and administrating a Drupal site. You can subscribe to the RSS feed of this section as well. Both for beginning Drupal administrators, people who are interested in using Drupal for a future project as well as for Drupal users that have been around for longer, worth checking out. The casts self are long (without being lengthy), in depth (without losing the audience) and very useful with lots of information. So be sure to check them out, there are currently 8 screencasts online.

Note that these screencasts are also linked on the "overview" page of the screencast section of the Drupal handbook.