Selfhosted

Look into docker containers in general. If I was going to start from scratch in your position this is what I'd do:

Install a Linux distribution on the computer you plan to use for self hosting. I found Debian with the KDE plasma desktop environment to be pretty familiar coming from Windows. You could technically do most of this on Windows but imo self hosting is pretty much the only thing that a casual user would find better supported through Linux than Windows. The tools are made for people who want to do things themselves and those kinds of people tend to use Linux.

Once you have a Linux distribution installed, get docker set up. Once docker is set up, install portainer as your first docker container. The steps above require some command line work, which may or may not be intimidating for you, but once you have portainer functional you will have a GUI for docker that is easier to use than CLI for most people.

From this point you can find the docker installation instructions for any service you want to run. Docker containers have all the required dependencies of a given service packaged together nicely so deploying new services is super easy once you get the hang of it. You basically just have to define where the container should store it's data and what web port you want to access the service on. The rest is preconfigured for you by the people who created the container.

There's certainly more to be said on this topic, some of which you would likely want to look into before you deploy something your whole family will be using (storage setup and backup capability, virtual machines to segregate services, remote accessibility, security, etc). However, the above is really all you need to get to the point where you can deploy pretty much anything you'd like on your local network. The rest is more about best practices and saving yourself headaches when something breaks than it is about functionality.