The 2009 USA Rugby 7's Refereeing Handbook is available to download at: http://www.usarugby.org/media/EDocs/2009_Refereeing_Sevens_Handbook.pdf

The electronic version of the 2009 Laws of the Game is available to download at: http://www.irb.com/lawregulations/laws/index.html

Check out the new IRB Laws site: www.irblaws.com

Download the IRB's Beginner's Guide to Rugby.  It, along with the Community Game Management Guidelines, can be found at: www.usarugby.org/goto/referee_resources