Buying and selling NFTs is like trading digital collectibles on the internet. People use special websites, called NFT marketplaces, to do this. First, artists or creators make digital files like art or music and turn them into NFTs through a process called "minting." This connects the digital file to a unique token on the blockchain, a secure digital system. Then, these NFTs are put up for sale on marketplaces, and buyers can use cryptocurrency, like Ethereum, to purchase them. Once bought,...