I think introducing cryptocurrency to newbies must start from the very basic on telling them what is the difference between a cryptocurrency and the fiat currency we do have outside the network or offline. By telling them that, it will gain their interest to know more about cryptocurrency because they will now seek more information of what is something compared to what they have already know on the old times. Telling them than the technological advancement is one of the key factors why such type of currency was created way back 2009 and still up until to the present time. Tell them the benefits or things they can acquire by getting into cryptocurrencies compared to fiat. Although those two are different, if you really want to caught the interest of a newbie, marketing cryptocurrency to them will be the best strategy to boost their eagerness on knowing what cryptocurrency really is.