Cryptocurrency refers to a digital or virtual currency that uses cryptography (the art of writing or solving codes) to secure and verify transactions and control the creation of new units. Cryptocurrencies are decentralized, meaning they operate independently of a central authority such as a bank or government.

Buying cryptocurrency can vary depending on the specific cryptocurrency and the country in which you reside. However, here are some general steps you can follow:

1. Choose a cryptocurrency exchange: There are numerous cryptocurrency exchanges available, so research to find one that fits your needs in terms of security, fees, and the cryptocurrencies they support.

2. Create an account: Once you have selected an exchange, create an account by providing your personal information and verifying your identity.

3. Link a payment method: You'll need to link a bank account or credit/debit card to purchase cryptocurrency. Some exchanges also support other payment methods like internet payment systems or wire transfers.

4. Place an order: Once your account is verified and your payment method is set up, you can place an order to buy the cryptocurrency of your choice. You'll need to specify the amount you want to buy and the cryptocurrency you want to purchase.

5. Store your cryptocurrency: After your purchase is completed, you'll need to store your cryptocurrency in a secure wallet. Some exchanges offer wallets, or you can use a separate wallet to store your cryptocurrencies.

Remember to always be cautious when buying cryptocurrency and only invest what you can afford to lose. Additionally, it's a good idea to research the cryptocurrency you're interested in and its market trends before investing.