Looking to get started with Aperture? I've collaborated with Scott Bourne and Lynda.com to publish, Aperture 1.1 Essential Training.
In over 6 hours of QuickTime movies that you can watch from the comfort of your computer, Scott and I walk you through all of the essential functions of Aperture 1.1. In some of the sections I teach alone, and others Scott and I work together to make sure you get a solid foundation for Apple's breakthrough photo management application.
You can try some of the movies for free or subscribe to the full training for as little as $25. I'll also have a DVD available on this site soon.