OpenSea Marketplace: How to Buy, Sell, and Mint NFTs

NFTs are Non-Fungible Tokens; non-fungible means irreplaceable and unique. I'm relating unique with nonfungible, everything irreplaceable is unique. For instance, if you draw a sketch, it becomes a masterpiece and nobody can replace it, which comes with uniqueness as well as being non-fungible. And the word Token means proof of authority which means the sketch you draw belongs to you and you are the authorized owner of this sketch. For NFT trading we use different marketplaces, and OpenSea is one of them.

What is NFT?

NFT was developed using blockchain and a distributed ledger to store the record about each node. Moreover, it is completely decentralized.

In short, NFTs are digital assets like images, videos, gifs, music, art, and everything on the internet that belongs to you like your Tweets. Each NFT has a unique value which is called a token and it gives you complete authority over your assets and certificate of ownership so in that way no one can claim your assets unless they don’t buy them.

If someone wants to buy the NFT, first they have to exchange some currency with you and in return, they will receive a token of that NFT.

What is OpenSea

To buy NFTs you must join a platform where you can sell or buy NFTs, OpenSea marketplace is a big platform where you can create, buy, and sell your NFTs. There are also other NFTs platforms like OpenSea, Rarible, Binance, SuperRare, and more…

It is a non-custodial platform where the user can fully own it and moreover can connect their wallets and fully control it.

Here we are going to discuss NFT buying and selling on the OpenSea marketplace, as it is a big platform where you can create, buy, and sell your NFTs. Step-by-step guidelines are given below:

How to Buy NFTs

On the OpenSea platform, there are two kinds of communities: the first is the seller and the other one is the buyer. Both are here to earn revenue; the seller could be a creator of the NFTs who mints the NFT but it is not just all the time. Sometimes the seller of the NFT was a buyer of the same NFT.

To mint, sell, or buy the NFTs the very first step you have to perform is wallet connectivity and make sure you have enough balance in your wallet.

Step 1: Connect the Wallet

Go to OpenSea. Firstly, we have to create an account on this website, secondly, we link our Metamask wallet to this website. To link the wallet, click on the wallet icon given on the right side of the screen, and then select the MetaMask wallet to sync.

Hit the button Next:

Hit on Connect it will take a little bit of time to connect:

After a successful connection, it will redirect you to the given page. Hit on Accept and sign:

Click on Sign:

Step 2: Explore NFTs to Purchase

Click on Explore given in the nav bar to search your interest areas: like music, photography, support, trading cards, and others:

After the selection of Photography here, it will display all trending photography, you may select one of them and can explore each one by one:

After clicking on your favorite NFT, here you can make the offer by clicking on Make Offer or Add to cart:

To buy this given NFT just click on the button Add to cart:

Go to the cart to view all the products:

Here it will show all the details about the product to purchase just hit the button Complete Purchase and complete the payment process:

How to Mint NFTs

Publishing unique digital assets is called NFT minting, also called the creation of unique digital assets. Here is a step-by-step guide to minting NFTs:

Step 1: Work Out What You Want to Create

NFTs can be a piece of digital art; they can be an image, drawings, sketching, painting, calligraphy, illustrations, memes, and more. Pick your talent and make it, think, and create.

Step 2: Set up the Wallet

Connect your digital wallet with the NFTs marketplace account. Register yourself on one of these given wallets like Coinbase Wallet, MetaMask, Enjin, Math wallet, and others. A Digital wallet is essential to send or receive money while buying and selling NFTs.

Step 3: Go to the NFTs Marketplace

NFT marketplace is a platform where you can buy and sell your NFTs, to open the marketplace click on OpenSea:

Step 4: Connect the MetaMask Wallet

Follow the steps given in the above section.

Step 5: NFT Creation

Hover on the profile icon and click on Create to create the new NFT that you want to sell. Enter the following thing to create NFT:

Digital Assets you can pick: images, videos, illustrations, memes, songs, poems, sketching, drawing, calligraphy, 3D model, and more.

Description: Enter a detailed description regarding your assets, explain your asset and let the world know that your asset is unique.

Supply: Enter the number of your assets.

Blockchain Selection: Select the blockchain for your NFTs like Ethereum, Solana, or Flow but if this is your first NFT and you want to start with zero investment then the Polygon is always best for the initials because it is totally freeware. And then hit the button Create once you hit the Create button your first NFT has been minted.

Note: Always select the Polygon blockchain while creating NFT, because it is totally free.

How to Sell NFTs

Select the NFT you want to sell, and hit the button Sell:

Enter the amount and set duration, and hit the button Complete Listing:

After that go to wallet MetaMask and hit Approve:

Click the Switch network:

Click on the little small arrow icon in the seaport message and hit the SIGN:

Finally, the item has been listed:


NFTs are non-fungible tokens, they can be images, videos, gifs, memes, art, and any digital assets. You can sell all the given digital components through NFTs, which work on the blockchain network. Each component has a unique identity called tokens, it gives you a certificate of ownership and authority. Although there are multiple marketplaces for NFTs selling and purchasing, here we discussed the OpenSea platform to sell, buy and mint NFTs.

About the author

Kevin R

Trade with Binance.US