if I think to convince people that an investment in bitcoin is, at first we have to explain what it is bitcoin and how the performance of virtual money itself, after that we have to convince people it that bitcoin is the place to save money secure, However, there are many people who think bitcoin it's not safe, but to convince people who want to investment we have to explain the procedure bitcoin people we want to explain, but my advice do not too inves large, but the start of a small, there may be an explanation more details of the member here more senior. thanks