To gain wealth, be among them. After a few years among the wealthy you will know how they gained, where and who from. The main point to learn is that their story is easy, short, simple. You must know this, to become wealthy like them, you will learn this about them, they will steal with you, or they will steal from you. This is the sum total:

The wealthy steal with you, or they steal from you.

You are now rich or you are still poor… good luck hunting.