I have been using Lemmy for 20 days, at first I opened an account at Lemmy.world because you can join without writing a text and waiting approval. I have been enjoying the experience overall but despite the admin teans best efforts Lemmy.world has been experiencing some serious performance issues. If you want to avoid that join a smaller instance, preferably hosted in your country. I joined discuss.tchncs.de today and everything is so much faster it has added benefit of being able to see beehaw.org posts too. It will improve not only your but all other Lemmy.world users experience too.
The best way Ive found is to copy the html of your community list and paste it into an online tool that pulls the hyperlinks out of it, then make an excel spreadsheet to change the URL of the community to the https format so it’s easier to search. The instances also aren’t 100% compatible. Like I can subscribe to kbin and Fedia on my larger instance account but not on my self hosted one.
Yeah, Lemmy being in a very “alpha” state makes some of the things a user wants to do difficult.