I cannot possibly recommend Neocities enough. It's free and has an easy-to-use interface. Even if you have absolutely no knowledge of HTML or CSS, they have tutorials that make it extremely easy.

Another thing I recommend, regardless of what hosting solution your shrine is on, is looking up stuff that other people did and copying it. This is how I figured out a lot of CSS and more advanced HTML stuff. This can be especially helpful if you want to do unique things with the visual layout.

As for like, what to put on there, I don't know what you've planned out and you may already have an idea of what you want it to look like, but like, the basics are a good place to start, character bios and summaries, fanworks or essays about the story, maybe like sprite rips or screenshot galleries if you want to provide some resources to the community.