[QUOTE=CLBuffalo]
BTW I have been a softball umpire for 23 years but I don't think that's going to help much.QUOTE]
CLB Don't be so quick to discount your 23 years of Judging "play and players". You already have experience in making decisions and "living" with them. It is experience that will serve you well.
Find your local US Soccer "Instructor", borrow the tape "The myths of the game", and a booklet "Soccer rules simplified".
http://www.ussoccer.com/laws/index.jsp.html Follow this link and review the presentation on "Proper Positioning".
Good Luck in your new soccer frontier.