Most people don't know the first damn thing about our "money."
Neither did I until a few years ago.
For a great historical perspective on money, read "The Creature from Jekyll Island," by G. Edward Griffin.
Using the phrase, "follow the money," I made some flowcharts that helped me understand where our "money" comes from.
Follow these links (in sequence) to get some idea of how the "Federal Reserve Bank" works.
(It's not "Federal", there's nothing in "Reserve", and it's not a "Bank".)