If you want a master of subd modeling (Blender, 3D Max, ZBrush...)
take a look to Arrimus 3D!
https://www.youtube.com/c/Arrimus3D/featured
He has also 46 Videos about Moi3D (not SUBD...Pure Nurbs)
https://www.youtube.com/watch?v=X5r3xc_Go3o&list=PLxt9ZAGPLIpdn6CH2IbsNRYDlikLucxVe