Important Links
Organizations
Section XI: http://www.sectionxi.org/
USA Field Hockey: http://www.usfieldhockey.com/
East End Field Hockey: http://www.eastendfieldhockey.com/
National Federation of State High School Sport Associations: http://www.nfhs.org/
NCAA: http://www.ncaa.com/
New York State Public High School: http://www.nysphsaa.org/
Tutorials
http://www.youtube.com/user/USfieldhockey/videosabout tackles: http://www.youtube.com/watch?v=wkPCFTn-9s0
developed a few years ago and is somewhat useful:
http://www.umpirehockey.com/Helpful_Videos_16/index.shtml
rules videos: http://www.dartfish.tv/fih