Tax lien investing is one of the highly profitable investment methods that many investors do not know. But, it also leads to a huge loss if the investor did not know what tax lien and how things going on in this process. If you are the first time investor, you must understand and know the rules and procedures followed in the lien investment. Many tax lien networks are there to learn about tax lien, its investment methods and buying tax lien certificate. Before joining an institute verify that it has a good opinion among the locals and in online reviews.