A cryptocurrency is a form of payment that can be exchanged online. Cryptocurrencies work using a technology called a blockchain.It is a collection of binary data which is designed to work as a medium of exchange wherein individual coin ownership records are stored in a ledger which is a computerized database using strong cryptography to secure transaction records, to control the creation of additional coins, and to verify the transfer of coin ownership.This book provides all the basics of Blockchain, Cryptocurrency, types of currency in the market, how and where to invest and NFT's.