It is "how to become rich" - save on everything and make money on everything.

This is a very bourgeois view of the process of appearance of wealth, most often out of this comes "how to threaten physical and mental health".
In order to be rich, you have to be the first. The first to patent, the first to start producing or selling and the first to stop when it becomes unprofitable. And as long as you are running behind every passing stone, you won't earn a nicotine seriously.