Understanding the NFT marketplace
The NFT marketplace is just like any marketplace. One of the examples of a marketplace is Amazon, where people can sell and buy things. As a buyer, you can search for any items you like, from books and smartphones to kitchen appliances, and so on. But you can also be a seller. You can upload information about your items to sell on Amazon. Then people can buy the items from you, and you receive the payment from the buyer.
To be exact, the process could be a bit different. Instead of paying you directly, the buyer sends the payment to the marketplace first. After you deliver the goods, the marketplace releases the payment to you from the buyer. You can say the marketplace acts as an escrow so the seller and the buyer can do trading safely. Without the marketplace, the seller and the buyer can still do transactions, but they might not trust each other. Imagine, the buyer could send money to the seller, but then the seller refuses to send the goods...
