Persist with the video! The text-to-speech is only for a couple of quick screens - the rest is very personal, and they cover a bunch of use cases.
If you really don't want to, the server OS they recommend around two-thirds of the way through is YunoHost, a beginner-friendly way to run services as containers on any capable spare computer. The YunoHost website has a bunch of use cases that are also covered in the video.