The topic of this paper are cryptocurrencies. Most people are still not familiar with this topic in a timely manner, so this paper presents and describes cryptocurrencies and the way they are used in everyday life. Cryptocurrencies are digital currencies used as a medium of exchange. Government agencies and banks are excluded from the exchange process. Cryptocurrencies enable easy, cheap and fast transactions all over the world. Currently, the most profitable cryptocurrencies are Bitcoin and Ethereum, and the paper describes their usefulness, advantages and disadvantages. Since Bitcoin is predicted to have a successful future and is increasingly present and acceptable on the market, the paper presents examples from Croatia that confirm this fact. An increasing number of entrepreneurs are opting for the introduction of cryptocurrencies. The examples cover a wide range of activities, from hairdressing services, various companies selling computer equipment, catering services and the ability to quickly and easily withdraw cash at crypto ATMs to pay for utilities and even donate funds for humanitarian action. Many believe that cryptocurrencies are just a synonym for fraud and money laundering, but developers claim that cryptocurrencies are just one type of technology, a tool that itself can be neither good nor bad, depending on what it is used for. The author of this paper conducted the research on how to start cryptocurrency trading for free, and the survey examined the respondents' attitudes about the implementation of cryptocurrencies in society.