Unstable and unpredictable course. The rate of any cryptocurrency can change several times a minute. Over a long period of time, the rate falls and takes off not only unpredictably, but also with high rates. Bitcoin, for example, reached a record high of $ 20,000 in December 2017, and fell to $ 8,000 by February 2018. This is the main risk that you can lose everything that you have invested. This can happen with any cryptocurrency, no one is immune from anything. And if you invest in cryptocurrency not your own free money, but borrowed money, then you can not only lose everything, but also be left with debt, which will grow, and which you will not be able to pay off. You can invest in cryptocurrency only the money that you are not afraid of losing. I know this feeling - there are hundreds of different places to choose from, each with their own pros and cons. But don't worry, you've come to the right place! Today I am going to tell you about seven cryptocurrency exchanges, I will show you where to buy cryptocurrency and how to exchange cryptocurrency for US dollars. A large selection of currencies for quick exchange will attract large traffic of regular users.