Domain name reseller is a term that can be used to describe what we do in one specific area of our business. We simply buy a domain name either as an unregistered domain name or in the domain name aftermarket then resell that name to a customer who needs to use that particular domain name either personally or for their business.
There are many websites where you can get involved and learn about the domain name aftermarket. One domain auction market is GoDaddy Auctions. You can buy and sell domain names in various auction formats. Another great auction marketplace is Sedo with more than a million member accounts from around the world.