Thanks to Vanessa Steeg for sharing this content with us: 

  She is a Rhino techie and trainer.

New to rendering or just wanting a quick refresher?  Start with this 10 minute video.

Download the model below and work along with Vanessa  (You will need to unzip the file)

Vanessa's Video:     Material Basics in v6 & v7

Vanessa's  Model:     Material Basics in v6 & v7          Download Link.

Extract after downloading