You cannot sell what you don't have. So, the first step to selling NFTs is creating one.
https://www.youtube.com/watch?v=l7-7hFSnbF8&t=10s Each series of NFTS is associated with a unique piece of code that cannot be copied. So, there is no ambiguity about ownership. You can convert different assets into NFT, such as videos, photos, songs, virtual real estate, and 3D objects.
