Welcome to "Bitcoin: The Future of Money and Decentralized. Finance Demystified." This e-book takes readers on a deep exploration of the revolutionary world of digital currencies and decentralized finance (DeFi), with a focus on Bitcoin, the most well- known and significant of all of them. A financial revolution that began with the invention of Bitcoin in 2009 is still having an impact on every aspect of the world economy. Bitcoin has posed a challenge to long-standing financial institutions, sparked an intense discussion among economists, investors, policymakers, and regular people, and was born out of the global financial crisis and motivated by a desire for a more transparent, decentralized, and equitable financial system. Nevertheless, many people still don't understand Bitcoin despite its popularity.