What is the easiest and most efficent way of getting rich

There are lots of claims, but most of them are half truths, false
inferences if not worse. Perhaps best is to spend very little, so you
have lots of savings. Typically oportunities that might make you rich
require that you have some money up front. You need to study a lot as
the more you know, the less likely you are to be swindled/con/cheated.
It is helpful to have some friends who went from poverty to wealth by
their wits.   Neil

Inheritance.

Win the lottery.