The Fediverse is a bunch of pirate and free trade ships that pass messages around with one another.

Pick a ship and let's get going!

Then show a list of the top instances. e.g. lemm.ee has the maximum amount of content, but at the cost of including all known trolling instances - Alt-Right, Alt-Left, and otherwise. lemmynsfw.com for, you know, porn, but many people block it as a result. Themed instances for Star Trek, Star Wars, anarchy, LGBTQIA+ inclusion, computer programming, gaming, anime, climate change, general science, etc. Or location based like aussie.zone for Australia, lemmy.ca for Canada, feddit.org for Germany, feddit.uk for UK, jlai.lu for France, Discuss.Online for USA, etc.

Sorting the list at https://lemmy.fediverse.observer/list can help. Unfortunately it requires 2 clicks after following that link to see what I mean, as the URL won't provide a sort ordering.

For the examples given, you could make links that show the feed sorted by Local and Active, to show what kind of content is most readily accessible there - e.g. this link, and therefore would have the least amount of federation (message passing) issues especially delays.

For the most part I would avoid instances having only a single admin as there can be problems with that, like them not responding quickly to a request to make a new account, or in the worst case what happened with Ernst at Kbin.social or dmv.social or so on where when the single person called it quits then the entire instance disappeared.

Which boat you choose can have a MASSIVE difference in how you experience the Fediverse - e.g. check out how different lemmy.ml looks from Lemmy.ca - bc of how many people will straight up block your entire instance (e.g. I have blocked all users from Lemmy.ml, bc I don't enjoy those type of tankie/Alt-Left messages in my feed).