You upload your content to the marketplace, convert it to NFT and wait for it to be sold. Relatively similar to other marketplaces such as Amazon or Etsy. If you already have a portfolio of digital content (NFTs) that you own the copyright to, here's what you need to do next:

1. Choose the marketplace, coin your NFT and link the crypto wallet.

There are dozens of marketplaces to choose from. These include OpenSea, Axie Marketplace, Rarible, SuperRare and Mintable. Take a quick look at these marketplaces and choose the one that best suits your content.

The next step is to "mint" the NFT. In simpler terms, minting is an NFT process to turn the digital file into a cryptocurrency object or a digital asset on the Ethereum blockchain. While this may sound confusing, most, if not all, marketplaces will provide a step-by-step guide on how to mint your NFT directly on their platform.

Once you've chosen the marketplace, you'll need to connect your funded cryptocurrency wallet. Then you upload your digital file and follow the process on the chosen marketplace. Each platform will have different options and will allow you to either sell the item as a one-time purchase or earn royalties.

2. Start selling your NFTs

Once you've filled in all the necessary information and your file is uploaded to the marketplace and memorised, it's time to put it up for sale. Once you have listed it for sale, you will notice that the marketplace will calculate "a sales fee". This is a fee for the Ethereum blockchain network to record the transactions. The fee varies depending on how busy the network is. You can lower the fee by uploading the file during specific times when the network is not busy.