I am a HS official from South Jersey and also an intramural sports director. You can go to our officials website for training materials.
http://www.rowan.edu/studentaffairs/...sTrainings.htm
Also...I ordered the IAABO Ecourt trainings software and it is excellent (where you can do 2 or 3 person mechanics, shows areas of coverage, lines of responsibility, FT mechanics, etc.). You just have to learn how to move all 10 players, and officials.
http://iaabo.org/Ecourt/AdecourtCom.html
I know that the Louisiana High School Association is very helpful as well as the IHSAA
http://www.lhsaa.org/officials/OfficialsManualsMenu.htm
http://www.cboa.net/rules.html