Cheerio is an open-source JavaScript library designed for server-side markup parsing and manipulation, providing a fast and lean implementation similar to jQuery. This tutorial guides users through installing Cheerio in a Node.js project, understanding its key features such as loading, selectors, and DOM manipulation, and building a sample CLI application called FeatRocket that scrapes featured articles from the LogRocket blog. The process includes setting up Cheerio, understanding website structures, downloading webpage markup using Axios, and filtering and logging the desired content to the console. The article emphasizes Cheerio's lightweight nature and familiar syntax, making it an effective tool for server-side applications and web scraping tasks.