This book will help you to understand the new and emerging world of blockchain and cryptocurrencies from an Australian layman's perspective. There is a common belief in the public that cryptocurrency is 'everything one does not understand about money combined with everything one does not understand about computers'. This book covers a wide range of topics including the history of money, cryptography, the origin and purpose of blockchain, the origin and purpose of digital currency, current uses and potential application, blockchain and its rivals, Australian taxation, purchasing goods and services, mining and trading, hacking and scams, how countries view cryptocurrencies, how banks are reacting (is it a bubble ?) and, finally, closing thoughts from the authors.