I've finally found a bit of time to start playing around a bit with the Papervision 3D class set for Flash. It is an awesome set of classes and I applaud the whole team over there. It will take a while for me to learn, and I am still trying to think of something practical I can build to help teach it to myself.
So far the hardest part of it all, is creating COLLADA models to import into it. I did a tiny bit of 3D work using 3D Studio Max while I was at SAIT, but I no longer have access to that program so I am using Blender which is free and very cool but also has a steep learning curve. Most of my experiments so far have just involved using basic primitives like spheres, cubes and cones. Hopefully I'll have some examples to post up here soon!