You can find communities on whichever server you’re on (looks like you are using lemmy.ml) from the search, or if you see a post from that community you can click on the name. Either way, communities on your server will have a url like /c/community, whereas communities not on your sever will have a url like /community/17561. You can subscribe to either in the same way, by just clicking the subscribe button!
Here’s an example you can test out on
I actually learned that the best way to subscribe to communities from another instance through search is to do !community_name@server_instance .
Thanks for your response though.
Support / questions about Lemmy.