Totally depends on the people, but in general its not such an easy topic to get around when you first hear about it. Best way to learn about it is reading by yourself I guess. If I talk with people that never heard of something like a cryptocurrency its really hard to explain, but with more tech savvy people, they can imagine easier how a blockchain works and how a currency like Bitcoin can be therefore created.
yes , when explain the cryptocuurencies with people they understand them very well. they take interest in my talk and then they start question how to work and how to join the crypto and they want to know about how to generate income form the crypto currencies. when they understand about the crypto currencies they join the crypto and start working with.