Step 1) Visit https://metamask.io/download and click Download
Step 2) Choose your device and click Install MetaMask
Step 3) Click Add to Chrome to complete the installation in Chrome or in other devices.
Step 4) Click Add Extension
Step 5) Installation is complete! Click Get Started to create your MetaMask account.
Step 6) If you already have an existing MetaMask account, you can import your wallet by clicking Import Wallet. If you do not have an account, click Create a Wallet.
Step 7) Next, you will need to click on the prompt I Agree.
Step 8) If you clicked Create a Wallet, you will need to create a password. Remember this password to login to MetaMask again at a later stage.
Step 9) Once your password is created, your Secret Back Up Phrase will be shown
Step 10) Your MetaMask wallet has now been created!