The Rev2.pdf is an old document but can still be used as a base for learning to package for PCLinuxOS.
Piece of advice: if you are learning, choose an easy RPM ... maybe one of the themes - icon, font, wallpaper, etc. Once you've extracted the specfile and inspected it, you can ask questions on portions you do not understand.
The only way to package for PCLinuxOS is to try (at least) to understand what the specfile does. There is no easy way but once you get the hang of it, you won't think it's that hard ... well, it still is a little hard.
You will have build fails and you will be confused ... we're here to help but looking for an easy way to do things, is like saying I just wanna create something but don't want to learn how ... then count me out.