To transfer from MetaMask to KuCoin, start by logging into your MetaMask wallet and selecting the correct network (e.g., Ethereum). Then, log into KuCoin and go to the "Deposit" section to find your KuCoin wallet address for the specific cryptocurrency. Copy that address, return to MetaMask, and click "Send." Paste the KuCoin address in the recipient field, enter the amount, and confirm the transaction. Double-check all details, including the network, before submitting. The transfer will be complete after the transaction is confirmed on the blockchain.