I think we can start explain bitcoin by tell them that bitcoin is like other international currencies dollar, euro and many else. They will understand and you explain more about bitcoin.
This is true. Bitcoin is just another currency but it is in the form of a digital just like we have the eBook version against the real hard book we can buy in bookstores. Young people in this generation can be so adept as far as technology is concerned and they can easily understand Bitcoin. With the help of Google, am sure they can easily get it. In fact, I am sure that creators of new cryptos are mostly made up of young techie people.