Apparently, fewer people know about this than I thought. When you open Revit 2009 (all "Flavors") in the right-hand pane of the welcome screen is a link to the Revit Web content library (or you can follow this link.)
First, if you haven't been here before, GO THERE! Stop wasting your time creating content when what you need may be right here. Granted, most people know about this resource.
Second, what most people overlook is the "Revit Instruction and Help Samples" page.
Look at BOTH the metric and imperial folders. I know you might not use metric content, but it will inspire you and give you a starting point. And, if you download the "Roof Forms" project, the SHEETS are instructional and tell you how to create the forms (taken from 2005 AU class.)
See examples below