to make an investment, of course we will understand more about market movements and coin price movements that we want to invest. in this case, I would like to convey some very good digital currencies for this investment in 2018. the first is Bitcoin, in my opinion the price movement is easy to monitor. then Etherum. the reason I dare to invest in digital currency "Etherum" because at the end of this year there will be a special price for those who make investments. for me, only the second digit of digital money that I invested. last year I also saved my money in both coins.