A cryptocurrency (or crypto) is a digital currency that could be used to purchase services and goods but uses an online ledger with strong cryptography to secure online transactions. Cryptocurrency is a type of payment that may be exchanged online for services and goods. This book will help explain more about some of the most popular coins around, helping you understand before you begin to trade. We explain the way to trade cryptocurrency for beginners. To start trading cryptocurrency, you have to choose a cryptocurrency wallet an exchange to trade on.