This book is the simplest introduction to the world of blockchain, cryptocurrencies, decentralization, Bitcoin, ICOs, and more. Have you ever wondered what Bitcoin, a cryptocurrency, or a blockchain is? What about the term "decentralization"? You may have heard that these things are coming and will dominate the world. Whether you are familiar with them or not, they are on their way and will play a role as significant as the internet has in the last 20 years. Do you know who won with the internet? The people who prepared early and started using it personally or for their business before others followed. With this new technology called blockchain, a similar opportunity is now arising. If you have no idea what a blockchain, a cryptocurrency, or Bitcoin is, don't worry - very few people do.