Financial markets are built on the principle of making a profit by trading the difference between the buy and sell prices of assets. A universal asset is a currency. Even those who have never dreamed of dealing with the stock exchange know that currency can be beneficially sold during its growth in price or beneficially bought during a downturn. The winner is the one who is constantly aware of market trends, ready to act and has the necessary theoretical knowledge. The latter is the most difficult because no university prepares traders, and a huge amount of literature, special courses and training programs can be really confusing. The possibilities of the Internet have increased both the activity on the exchange and the rates, as well as the volume of information - qualitative and low-quality.