Arizona Property Tax Lien Primer
   Information from attorney Mark Manoil about the legal and practical aspects of property tax liens and certificates of purchase as real estate investment. Includes news articles and links to related resources.
   http://members.cox.net/manoil/index.htm

JohnBeck.net
   California attorney offers educational materials and seminars on tax-sale investing.
   http://www.johnbeck.net/

LandLordTax.com
   Offering assistance to property investors and landlords with the completion of their tax returns.
   http://www.landlordtax.co.uk/

LienSource
   Offers subscription lists of property lien sales, in some localities.
   http://www.liensource.com

POA Properties LLC - Able Tax Sales
   Offers information by paid subscription about tax lien certificate and tax deed sales, and how to get started investing in them.
   http://www.tax-sale.com/

Tax Lien Associates, Inc.
   Offers a variety of services and investment products to U.S. municipalities and investors, including acquisition and brokerage, marketing tax-lien land, portfolio management services and software, and an investment fund.
   http://www.taxliens.com/

Tax Lien Certificates Network
   Website provides resources and information exchange for investors interested in buying and selling tax-defaulted paper. Includes related links; registration required to participate in the network.
   http://www.tax-lien-certificates.net/faq.asp

The Creative Investor Tax Lien Group
   FAQ, forum, and e-mail list for discussions about investing in tax liens.
   http://www.tcinvestor.com/taxliens.php