Install MetaMask as an extension to your browser. Note that the following browsers are supported: Chrome, FireFox, Brave, and Edge.
Create a Wallet or Import an Existing Wallet
This is where you have to create or import an existing Ethereum wallet. If you don’t have an existing Ethereum wallet, please select Create a Wallet. Always keep your Mnemonic and password to yourself and make sure to write it down.
When MetaMask reveals your secret words, DO NOT FORGET to write them down. This section is bolded so that you don't accidentally skim and lose access to your wallet forever. Click the Reveal Secret Words button. You will see a 12 words seed phrase.
DO NOT store these online, as that can always be a potential security risk. Instead, write these down in a notebook or something you will not misplace. Store it somewhere safe.
Now you'll need to verify your secret phrase. Again, if you lose it, no one can help you recover the secret phrase, so it's very important that you have it well-documented. Verify the phrase by selecting the previously generated phrase in order.
Set up MetaMask on mobile
The process of setting up your wallet on mobile is almost entirely the same as the desktop method. Instead of needing to download an extension for your browser, you simply need to go to either the App Store or the Google Play store and download MetaMask.
Again, the most important part of the process is documenting your seed phrase so that you can get into your account from other devices.
Identify your wallet address
Now your MetaMask wallet is set up. What's next?
You can use your wallet to house your NFTs and other tokens, but the unique (and public) wallet address associated with your account also allows other users to send you different kinds of tokens directly to your wallet.
Your address is easy to identify; both the mobile and desktop version have a button right next to the code that you can use to copy it to your clipboard.
How to set up MetaMask with Avalanche?
If you have not installed your own Metamask wallet, please do so. It is compatible with Chrome, Brave and Firefox. Download MetaMask here.