Warbler Guy, what are some good warbler identification resources?

Andy (in Lacrosse, WI), I suggest you see:

http://www.giffbeaton.com/warblers.htm

http://birding.about.com/od/identifyingbirds/a/warbleridentification.htm

http://www.enature.com

http://www.warblerwatch.com/warblertips.htm