There're things in business that seem inferior to others.
For instance, the Mc Donald's system.
It's a fully automatic system that will feed itself, repair itself and keep growing.
The process of raw material becoming a burger, the logistic behind it, the management system, the maintenance of every branch...
Like every sophisticated software, every business model in the world is hackable.
It might seem too gigantic at first and you might find no way to get through.
So you sit down at the Mc Donald's branch, observing how people moving around doing their things.
Then you read more about Mc Donald from whatever sources you can find.
You begin to have some dots.
You link them up, and keep searching for the missing detail.
It takes patience.
One day you will finally get it through and realize that how those little and big things are done.
Then you're graduated.
From the university of self learning.