In most states you are required to place your license with a broker before you can start practicing real estate, so you wouldn't be able to do anything with it except say that you have one
Try searching Taxes by State then go to Property Taxes. Taxes on land and the buildings on it are the biggest source of revenue for local governments. They are not imposed by states but by the tens...
A real estate transaction may involve a transfer tax, and it can be payable by the buyer or seller, depending on the town in which the property is located. There may also be state and county taxes...