Guides and other useful information can be viewed here:
http://docs.chaosgroup.com/display/VRAYREVIT/V-Ray+for+Revit+Help
Category: Visualize
To try V-Ray for Revit public beta:
1) Create an account or login at chaosgroup.com, then
3) wait
Heads-up from Brent Heber… more details at http://www.v-ray.com/revit/
