Recently, I made two presentations at the Western MA Drupal Camp. One presentation was for people new to Drupal and the other was a very advanced look at the framework for database administrators. I have posted my slides on the camp website. Also, the first presentation was streamed live and is available for viewing. Feel free to take a look at the links below.
Slides
Video
Slides
If you would like me to make a presentation for your ogranization, I am available.