I am looking forward to work with augumented reality in next project. This technology seems to be fun, but for now I did not worked with it. So my first steps were to see some tutorials and examples and I want to share interesting stuff I came across. This video tutorial from Lee Brimelow gives you great preview of some examples and basics. Then your next step is to get FLARManager (wrapper for basic FLARToolKit) and one of the 3d engines away3d or papervision3d (would be a good choice).