Today one of the most perspective and popular areas for investing is crypto-currencies. Investing in crypto-currencies is rather new sphere of online investments, but in spite of this fact with a professional approach to trade, one can receive a high profit that is not comparable with other kinds of investing. At the same time one should not forget about risks on this market, they are quite essential, if investor badly knows all details of crypto-currencies. Due to its growing popularity, crypto-currencies became a stably profitable tool of investing. If one draws an analogy with precious metals, for example with gold, not everybody can produce it. Everyone, who wishes to do so, can produce crypto-currencies and then sell them advantageously. However to gain a success on the market of crypto-currencies, one should have special knowledge and strategies of work.