Install Metamask Extension and Create an Account at metamask.io. Make sure your account has some ETH; you can buy ETH directly on MetaMask.
Go to Uniswap and Connect MetaMask to Uniswap: Click Connect, select Token, then paste the contract: 0x000000000000000000000000000000000000dEaD
Connect your MetaMask to Uniswap and proceed to swap Ethereum for WAT tokens.
Use the right amount of slippage (0.5%-1%), if transaction doesn’t work increase gas on MetaMask.
To see your $WAT in your Metamask go into tokens, at the end click on import tokens, then click on Custom Token and paste the contract: 0x000000000000000000000000000000000000dEaD and import.