I am trying to understand how the VirtualCam compound is made and how the control panels in CAMERAS and BILLBOARDS are made and how they are connected, linked, etc, but it is not an easy task especially when you are learning the software.

Understanding such a compound will certainly improve the knowledge of Aximmetry and how to create new, more complex stuff.

Also, adding more billboards? more paths? Customize the virtual cam with garbage matte or something else would be much easier, once that knowledge is well comprehended. 

So if when you do a new tutorial, please consider that as a subject.