Cryptocurrency is a type of digital or virtual currency that uses cryptography for security. It operates on decentralized networks based on blockchain technology, which ensures transaction transparency and security. Examples include Bitcoin and Ethereum.

Blockchain is a distributed ledger technology that records transactions in a secure and transparent manner. Each block contains a list of transactions, and once filled, it is linked to the previous block, forming a chain. This system enhances security and prevents tampering.

While cryptocurrencies use encryption for security, they are not immune to risks. It’s essential to store them in secure wallets and be cautious of phishing attempts. Conducting transactions on trusted platforms also enhances safety.

Cryptocurrencies can be used for various purposes, including online purchases, investments, and transfers. Some platforms allow you to convert crypto to fiat currency, while others enable trading or holding them as an asset for potential value appreciation.

To buy cryptocurrency, you need to register on a reputable exchange platform. After verifying your identity, you can connect your bank account or credit card and place an order to purchase the desired cryptocurrency directly.

Altcoins are any cryptocurrencies other than Bitcoin. They include a variety of coins and tokens that offer different features or use cases. Examples include Litecoin, Ripple, and Chainlink, each designed to provide unique functionalities.