MetaMask is a Chrome/Firefox browser plugin that allows users to make Ethereum transactions through regular websites.
2. Click the "Add to Chrome" button to install Metamask for Chrome. After the download is complete, click the “Add Extension”button to complete the installation. You will know Metamask has been installed when you see the fox logo on the upper right hand corner of your browser.
3. Follow the guidance in the APP to create an Ethereum account and backup key. Seeing this page, it means that your Metamask is ready.