title: How do I open NPM? I downloaded Node.js
body: <p>I'm going through this <a href="https://bitbucket.org/webrtc/codelab" rel="nofollow noreferrer">WebRTC Codelab</a> and they said you need node.js and socket.io to continue the tutorial. I downloaded node.js and to download socket.io, it says "run the following command: npm install socket.io". I don't know where to run this command, I don't want to do something I might regret later. There is a similar <a href="https://stackoverflow.com/questions/16000173/install-npm-node-js-package-manager-on-windows-w-o-using-node-js-msi">question</a> but it's 2 years old, I can't find the zip file they're referring to. </p>