This document provides an overview of cryptocurrency and blockchain technology. It begins with the origins and evolution of cryptocurrency starting with Bitcoin in 2009. It then defines cryptocurrency and explains how it works through decentralized control and distributed ledger technology like blockchain. Key features of cryptocurrency are described as trustless, immutable, and decentralized. The document outlines how to invest in cryptocurrency through exchanges and storing it in digital wallets. It covers blockchain, distributed ledgers, how blockchain works, and examples of its use in business. Initial Coin Offerings are introduced as a way for startups to raise funds by selling new digital currencies or tokens.