To use the MetaMask extension, you must first create an account. Once you have created an account, click the icon located in the upper right corner of the browser. Select "Create account." After creating an identity, you will be asked to create a strong password. After choosing a password, you must accept the MetaMask Terms of Use. Then, you will be asked to generate a 12-word seed phrase. Write it down and save it on your computer.

To get started with Metamask Login, you will need to login with your Facebook or Google account. Once you have your user name and password, you can begin using the extension. To access your MetaMask wallet, click on the 'Assets' tab and enter your private key. If you are using a dApp, your account will be displayed in the 'Activity' tab.