Also familiarize yourself with electronic payment systems. Figure out how everything works there, what is the basic principle. The most popular systems are Yandex.Wallet, a system working with one currency, and Webmoney. The latter has analogues of the main monetary units used in the CIS, as well as dollars and euros. In addition to these payment systems, there are many others and once the owner of one or another electronic wallet is faced with the question of transferring or withdrawal of funds. And this is a good way for you to earn.