MacDevCenter explains Quartz

Don't know your Quartz Extreme from your Quartz 2D? Don't worry, Matthew Russell over at the MacDevCenter.com has got you covered. His article offers up a very high level overview of what Quartz, and all of its components, are and what they do.

This isn't an exhaustive article by any means; however there are many jumping off points if you want to know more about a particular aspect of this powerful technology.