Region 418 AYSO Links:
Refscheduler
Ref Training
How to Register for a Course
AYSO Region 418 Local Policies
Region 418 Referee Mentor Request Form

Laws of the Game (LOTG):
FIFA Laws of the Game
Helpful Hints on Body Language, Communication and Use of the Whistle starts on page 186.
Important information about Offside starts on page 99.
Mobile Version

National AYSO Links:
AYSO National Referee Resources 
The AYSO Whistle Blog

Third Party Sites and Videos:
Ask the Ref
Refs Need Love Too
Build-out Line Review
US Soccer Federation Referee Program