ONLINE TRAINING RESOURCES
THE LAWS OF THE GAME
The most current edition of the Laws of the Game is available here: 2016-17 Laws of the Game.
ANOTHER SOURCE OF OFFICIAL INFORMATION
USSF provides official responses to questions posed to them at USSF Ask a Soccer Referee. This site is frequently updated and includes an archive of questions and answers going back several years.
It is essential that referees understand and follow local rule modifications designed to make the game safe and enjoyable. Please print out this "help sheet" of Las Cruces Youth Soccer League Local Rules and put them in your bag. Make sure that the "help sheet" is up-to-date by going to LCYSL Coaches and Referee Handbook, Including Local Laws. Also follow these rules on Handling Player Pass Cards. Also available here are the NMYSA Rules. LIKEWISE, YOU NEED TO KNOW THE NMYSA RULES.
There are a number of items in the rules for the Mesilla Valley Soccer League relevant to the refereeing of adult games. Referees doing these games need to be aware of them.
UNOFFICIAL BUT VALUABLE REFEREEING WEBSITES
There are numerous websites that contain referee “wisdom”. Some are more valuable than others (all information on sites not endorsed by FIFA or USSF should be evaluated critically).
The best referee blog is For the Integrity of Soccer, written by Robert Evans. There is also an official USSF blog written by National referees called "Official Take".