I probably don't have to spend much time on this, but thought I should mention it anyway. If you've already used up your 30-day trial period with Aperture 2.0, you won't be able to test drive version 2.1. Apple considers 2.1 part of version 2. Not exactly a leap of logic here.

If, however, you still have time left on your 30-day trial, then by all means download the latest version and play with the new tools.

In terms of resources, there's a new tutorial video for Dodge and Burn and a Late Breaking News.