Made a website. Now how do I host it?

I have made a website, got everything structurally looking nice, with some CSS to make it pretty. Tested it in a few different browsers to make sure nothing is wonky.

Now how to I host this thing so people can see it?

If I can host it from my computer at home, I think that might be a fun learning experience.

If I can host it for free somewhere online, I think that would be cool too.

How do I go from a folder with some html files, to something accessible from the internet?

Any reference material would be appreciated.