You need to study hard to understand everything.
Some things may be learned through a short period of study, obviously cryptocurrency and bitcoin are not.
They need to learn for a long time. It's very easy to trade with bitcoin, but it's just to transfer bitcoin from one address to another.
It's hard to really understand the industry if you don't spend time.
I don't totally agree with that. If you have interest in something you automatically get to know about it in a short time without even realising that you have done any hard work for that...its all about interest according to me