Are there any Sub-D tutorial on getting started from scratch?

Hi, I would like to dig into Sub-D, but have only started from an existing mesh, are there any tutorials or any hints on how to start from scratch? Also is there an shortcut to toggle on and of the cage/smooth view?

Found this Alias Studio tutorial and it’s nice from 40 minuts:

I too am wanting to start from scratch in this catagory. I will check out that video. Thanks for sharing

I saw that video you mentioned. It was t-splines by autodesk. It is a nice technology.