After completing this section you'll be able to build an interactive website circa 2008 (don't worry we'll update this to today soon!)
An interactive website changes over time, or has buttons you can press that do stuff. Good examples are: Facebook, Twitter and Reddit.
Obviously you'll want to build websites using all the best modern tech, but this is a nice stepping stone along the way.
jQuery was a revelation when it first came on the scene, but these days most developers are using React or something similar.