This is reference material that would help you start getting the most out the F8 and Ctrl + F8 Screens. The following should greatly help:
Special Order Parts Process Video: Part 1 (Explains it)
Special Order Parts Process Video: Part 2 (Shows an Example)
Introduction to Archived Special Order Parts Video
Managing Parts to the Grave: The Basics Video
The Special Order Parts Mini-Manual
http://rossware.net/MiniManuals/ManagingSpecialOrderParts.pdf
The following link should help for when you want to dig deeper and find out more about Special Order Parts or Stock Parts:
Parts Management Tutorial Videos (Requires Login)