That search finds Bestof.. as in your post but there's not "Subscribe" button so how do I add it to my subscribed communities? Sorry for teh ignorant Q, i'm ignorant

Searching for !bestof@kbin.social does the same (iirc the latter is the preferred way to get to a federated instance's community, but I'm a noob so waht do i know?)

not just OF but you have to log in to see listing of most communities