Anyone can create a profile to start collecting. All you need is a MetaMask wallet and ETH/BNB to purchase the NFTs you like. Artists may list NFTs for aunction at a reserve price, and once the first bid is placed, a 24-hour auction countdown begins, or artists may set up a timed auction and you can bid anytime within the time limit. If a bid is placed within the last 15 minutes, the auction extends for another 15 minutes. The artwork gets transferred to your wallet and appears on your collector profile when you win an auction and claim the NFT.