This book is a summary of knowledge about intelligence, wealth and security. It will be interesting, first of all, to teenagers and young people. Because it speaks simple language and calls things by their proper names. The book is free. You can read it online using the link in Google Cloud. https://docs.google.com/document/d/1--EoJdhOvBDJWLvcvwzdTBruGEXvOyhi/edit?usp=drivesdk&ouid=116860433546433776337&rtpof=true&sd=true I would be grateful for your feedback. #book #bitcoin #security