You can go to the Chaos Group page and there you can find great tutorials for Vray for Rhino, all the info and Webinars are free.
(All the info over Renders Elements you can find there in the manual too).
That is the best solution.
if you have the software, there you can all find!
The support team is so good to and quickly !.
If you bought the software, you can find everything right there!
If you bought the software you could also learn to use it, for this they have online tutorials, and all the necessary and clear information.
There = Renders elements /Vray for Rhino
So can choose differents types for your image….
Refraccion, reflexion, background, zdepth,global iluminations,lights,……etc.
Differents assets For postproduction.