This previously recorded webinar is a high-level presentation on the structure and some common features usually found in a site alias file. This knowledge share does not delve into drush setup or explanations of drush commands, but should be a great starter for developers and builders who use drush, and want to become more proficient and take it to the next level.
An Inside Look at the Omega Theme | Mediacurrent Blog Post
Responsive Design + Drupal | Mediacurrent Blog Post
Webinar: Services 3.x Module