Renderman! RIS

So I've finally installed Pixar's Renderman RIS! It is amazing. Learning Renderman is fun and I find it easy to navigate around the tools. But learning is always a steep learning curve.
I can't wait to dive into it and learn what's underneath the render engine just as well as I know V-Ray.

Here is my first Renderman Lighting exercise from Digital tutors, comp'd in Nuke.