Is there a goto conference talk about Activity Pub, Fediverse, and Lemmy yet?

I'm just looking for an overview, like, what goes where to do what. I'm helping with some basic testing on the beta, looking at the client page source/github, and would like to ground my understanding. I know this is borderline for a "self hosting" post. I hope the mods will let it fly because this is such a large community. I'm sure people looking into hosting Lemmy instances are also taking a look under the hood and can maybe share good references. I searched on YT, and watched a few, but nothing stood out as good. There are only half a dozen results before the YT salting algorithm goes ADHD on irrelevant nonsense.

If you happen to have a ref on YT, can you please share titles and content creator? I'd rather avoid their tracker links to my account here.

Edited title to be more clear that I am looking for informative content. Sorry for any misunderstanding.