Here are some useful sites:

http://www.akc.org

http://www.gundogsonline.com/default.asp

http://www.infodog.com

http://www.offa.org

http://www.onofrio.com

http://www.teamretrieve.com/tr_main.htm

http://www.woodhaven.tripod.com/links.htm#CLUBS

where I buy all my Retriever training supplies!