To purchase an NFT on OpenSea, the first thing to do is sufficiently fund your wallet. It is important to buy enough crypto to cover not only the cost of the NFT but also the various gas fees that you may incur. You can easily buy the crypto you need through popular crypto exchanges like Coinbase. Once you have enough money in your wallet, you can go to your desired NFT item and click the “Buy Now” button. Then, all that is left to complete is agree to the terms of the marketplace, click ‘Checkout’ and confirm the purchase.
If the NFT in question is on auction, you can simply follow the ‘making an offer’ guide to bid for it. In this case, you’d have to wait for the seller to accept your offer before you can finalize your purchase.