Also check out here for some tips for people coming from a poly modeling background:
http://moi3d.com/forum/index.php?webtag=MOI&msg=4865.2

With NURBS modeling you generally don't approach things by squishing around sub-objects in 3D, there is more of a focus on working with 2D curves.

That's why the edit frame is focused on behaving closer to how a 2D vector drawing program works instead of the transform gizmo like you're used to in Maya and C4D.

- Michael