Simon Willison’s Weblog

How do I get started with node.js?

My answer to How do I get started with node.js? on Quora

You don’t run Node.js in a script tag on your website. Node is a technology for writing servers in JavaScript—you can think of it as a replacement/alternative for PHP, Python, Ruby, ASP.NET etc.

This looks like a reasonable getting started guide: http://www.nodebeginner.org/