It is a lot but it's what you need to get set up. If you know how to port forward your router it should be very easy.
You'll also need to configure this for the server to show on the server list
Those links go to an unofficial fork of the official documentation. Quickly skimming through the pages, it appears that they are outdated compared to the actual official documentation that it was forked from.
As such, I'd recommend that people use the official docs instead. The issues with the linked docs are currently fairly minor, but if it's unmaintained then it won't be as informative on most topics.