This page contains various recommended resources for tax lien investors:

Tax Lien Investing Basics - information by Tax Lien Lady.

Tax Title Services has developed a process that enables tax lien/deed investors to obtain title insurance on their tax-deeded properties without the need to file quiet title actions or to wait out statute of limitation periods.

Free Tax-Lien Calculator - a simple calculator that let's you model various financing scenarios for your tax-lien portfolios.