You will need to determine which specific digital asset you wish to convert into NFTs.
It starts with determining the blockchain technology you intend to use for your NFTs.
If you don't have a digital wallet, you'll want to set one up to create your NFT since you'll need some cryptocurrency to fund your initial investment.
it's time to start creating (and, hopefully, selling) your NFT. For that, you'll need to choose an NFT marketplace.
Your chosen NFT marketplace should have a step-by-step guide for uploading your digital file to their platform.
Sell it at a fixed price, Set a timed auction, Start an unlimited auction