...Refer to their documentation or find other tutorials if you want to acquire deeper knowledge in them. You don't need to use this entire stack if you build a simple web page with a few JS interactions of course (a combination of Browserify/Webpack + Babel + jQuery is enough to be able to write ES6 code in different files), but if you want to build a web app that scales, and need help setting things up, this tutorial will work great for you.