Learn the fundamentals of Gulp 4 in this beginner-friendly crash course. Install Node.js, set up Gulp CLI, and create essential files like package.json and gulpfile.js. Master key tasks including Sass compilation, JavaScript processing, and cachebusting. Explore how to create a watch task for automatic file updates and set up a default Gulp task. Organize your project structure with SCSS and JS files, then test the entire Gulp workflow to streamline your front-end development process.