Where can I begin to find out if I qualify for Indian heritage benefits?

What does a $ (dollar sign) on a grave stone with 3 vertical lines instead of two mean?

Where does one find census data after 1930?

Is it possible to view death certificates on line, these deaths happened in the USA in the following states (Utah and Idaho)?

Where can a list of doctors in Brooklyn NY in the 1900s be found?

National Archives research?

New York State Census?