The Broccoli Taco site generator is a fast, simple, and flexible tool that allows developers to create dynamically generated static sites using data sources such as JSON files or functions. It uses the Broccoli library, which provides an asset pipeline for browser applications, making it suitable for generating static sites quickly. The guide assumes users have Node.js installed and covers the process of installing broccoli-taco, creating a site, building it into a folder, setting up a GitHub repository, connecting to Netlify, and configuring settings. Once connected to Netlify, the site is automatically built and deployed, allowing developers to manage their sites more efficiently.