Many people in 2021 are wondering whether it is worth buying Bitcoin and cryptocurrencies? Maybe you were late and the train has left, or is there still a chance to jump into the last carriage? My Russian friends asked me to analyze this question and give an answer. This is how this book was written. It contains ideas and recommendations from successful traders and investors, as well as basic information. When I showed it to my comrades, they convinced me that the topic would be interesting to a wide range of readers. I thought, why not! But before you start reading, there are just three questions to answer. Are you interested in big money? Do you want to change your life? Are you ready for this? Then this book is for you!