The answer is very easy to how could you learn it. Cryptocurrency is the easy way to become rich if you get yourself employed in it. Cryptocurrency is the exchange of digital currency to generate profit.
To me on this, apart from profit , the reality is that cryptocurrency is used for different things like trading, exchanging it and using it for payment. If we only concentrate on profit as the reality of cryptocurrency, it will only look little important but it goes a wide range of human activity.