If you live in a place where gold can be found – then this can be very fruitful. Using metal detectors to locate precious metals; which can be either in naturally formed nuggets, flakes, or in the form of historical artefacts.
Alternatively, many sites worldwide still allow patient prospectors to gather gold through panning; that is, filtering river silt and water for small quantities of gold sediment. While the quantity of gold gathered in this manner will generally be smaller than those recovered with metal detection; the smaller choice of areas usable for panning gold make success more achievable.
Participation in this form of gold prospecting is really as simple as purchasing a metal detector and using it, or showing up at a viable river or stream with a fine sieve. It’s fair to say that making significant sums of money with either of these methods is more down to luck than preparation or skill, although a good knowledge of the geological makeup of prospective areas will always increase the odds of success.