To begin purchasing cryptocurrency, you must first locate a crypto exchange site that allows you to convert your fiat currency (cash) into coins. Because some exchanges only allow crypto-to-crypto trades, you must purchase your crypto at an exchange that accepts debit/credit cards or bank transfers.

Coinbase is the most popular exchange in the United States for purchasing cryptocurrency with cash. Binance is the most popular cryptocurrency exchange elsewhere. Both exchanges are simple to use and provide a wide range of altcoins, which are digital coins other than Bitcoin.

When paying with cash, you'll almost certainly have to choose one of the major cryptocurrencies for your first transaction: Bitcoin, Ethereum, or Tether. Then you'll have access to a plethora of additional trading pairs to get to the coin you want.

Cryptocurrency can be purchased through various platforms, each offering distinct features and levels of convenience. Major cryptocurrency exchanges like Coinbase, Binance, and Kraken are popular choices, providing a wide range of digital currencies, user-friendly interfaces, and robust security measures.

Some exchanges require users to create an account, complete identity verification, and link a bank account or credit card. Additionally, peer-to-peer (P2P) platforms like LocalBitcoins enable users to buy directly from other individuals, often with more payment options and less stringent verification processes.

For those preferring face-to-face transactions, Bitcoin ATMs are available in many cities, allowing the purchase of cryptocurrency using cash or debit cards. It's crucial to research and select a reputable platform to ensure a secure and efficient buying experience.