In order to buy an NFT, you must first purchase bitcoin and attach it to your funded cryptocurrency wallet. The Ethereum network allows you to purchase cryptocurrencies such as Bitcoin and Dogecoin Ethereum. Essentially, your digital wallet is where you hold your cryptocurrency, transfer and receive it, and use your cash to buy crypto applications and services. 

After you've created and financed your digital wallet, purchasing an NFT becomes a simple process. When you've accumulated enough NFTs, they'll be kept in your metamask wallet or digital wallet. There are several digital wallets available, including the coinbase wallet, the Ethereum network, and others.