You can download "How to Measure a Roof" at the bottom of this page.
You can download "Trim Locations" at the bottom of this page.
You can download "Screw Placement for PB-U" at the bottom of this page.
You can download "Screw Placement for PB-R" at the bottom of this page.
You can download "Tacky Tape Placement" at the bottom of this page.