Art Auction Primer
ABOUT ART AUCTIONS  
ArtAuctionsOfAmerica Comprehensive list of American art auctions
ONLINE BIDDING SERVICES  
ArtFact.com Bidding service for many auctions.
LiveAuctioneers.com Bidding service for many auctions
APPRAISING AND APPRAISERS  
AppraisingArt.com Everything you need to know about appraising art.
AmericanArtAppraisers.net Comprehensive list of art appraisers by state and specialty
ART INVESTMENT  
InvestingInArt.net Informative articles on art investment.
AUCTION INFORMATION  
AskArt.com Large database of auction records.