Cryptocurrency is a digital or virtual currency secured by cryptography, making it nearly impossible to counterfeit. Unlike traditional money, it operates on decentralized technology called blockchain, a distributed ledger that records all transactions.

Here are key concepts every beginner should know:

1. Bitcoin: The first and most popular cryptocurrency, often referred to as digital gold.
2. Altcoins: Cryptocurrencies other than Bitcoin, like Ethereum and Litecoin.
3. Wallets: Digital tools for storing crypto securely, including software, hardware, and online wallets.
4. Exchanges: Platforms where you can buy, sell, and trade cryptocurrencies.
5. Private Keys: Unique codes that give access to your crypto holdings — keep them safe!

Understanding these basics will help you start your crypto journey with confidence.