As a newbie, we should be aware that we are new people who can become targets of criminal in crypto currencies. Indeed, before joining crypto currencies, we should equip ourselves with deep crypto currency business knowledge so that we are not mistaken in buying crypto currency coins. Before buying coins, we should need to know the coin in depth and know the technology carried by the coin. We also need to know the coin technology innovation so that it becomes a characteristic that distinguishes the coin with other crypto currency coins. Finally, we have to be able to see the successful chance of the crypto coin. After all we believe so we have a good future then we can buy it.