I would get all the infomation from your local county if they offer tax lien sales, or there are 7 states that offer online tax lien sales. They are Arizona, Colorado, Florida, Illinois, Maryland, Nebraska, and New Jersey. They can be found at http://www.realauction.com/county-tax-lien/ Go to the "training site" in the state you want and look through the bidding rules as well as everything under the "training" tab. Make sure you view the "general information" and the "certificate process".