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.
I explain what bitcoin is digital currency and it is easy to convert to cash or paying bills. And most of all I explain to them every small details of bitcoin. That bitcoin is a big help in our financial problem and to other people, once you invest and wait the right time you earn and high profitable income.
Bitcoin is really interesting, but does it is really easy to make money as others say? As a Bitcoin's users since earlier this year, I can say nothing is easy at here. Others are trying to promote this field for you, you shouldn't let their sweet words made you thought the Bitcoin market can helps you make money without any risk.