If you personally don't want to have an internet connection then I'm afraid it's going to be hard for you to run a webserver for free. I think this would be unusual though.

the point is that http isn't free of ongoing costs.

Are you paying for http on top of your internet connection costs?

Or I might get free access from my library and they don't permit me to run a web-server.

I'd probably get a more expensive plan that had good upload speeds.