I think the whole point of free speech is... you can just make a website and publish whatever you want on it.

I would just make a substack or a self hosted ghost website unless you're really invested in the development process.

I would just look at sites like https://apnews.com/ or https://www.bbc.com/ and see what they do, but I don't think you technically need anything, plenty of people have wordpress blogs and substacks without a legal section. What's the difference between your website vs a twitter account vs a substack where you live, probably not very much.

If this is the US, I can't think of anything as such.

If you're choosing a name for the thing, then I'd choose something fairly unique, so that if you get into any kind of trademark wrangling down the line, you're in a good position. That's about as legal as I can think of.

Depends on country, if you're a company or doing it for profit and if you do additional stuff like sending emails.

If you're doing it for fun and are in the USA, you don't need to do anything.

If you're a company you should add the fine print. Add copyright notices, trademark claims, terms and conditions, disclaimers...

If you're sending out newsletters you need to make sure people can unsubscribe.

If you're in the EU you might need a whole imprint, privacy policy, handle user data properly...

There are no requirements.

I'd advise that if you're making a parody site you have some disclosure of that fact pretty accessible on your website (it doesn't need to be front and center but it needs to be reasonably discoverable).