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Lemmy active users grew by an astounding 1600% in June
(lemmy.world)
A community to talk about the Fediverse and all it's related services using ActivityPub (Mastodon, Lemmy, KBin, etc).
If you wanted to get help with moderating your own community then head over to !moderators@lemmy.world!
Learn more at these websites: Join The Fediverse Wiki, Fediverse.info, Wikipedia Page, The Federation Info (Stats), FediDB (Stats), Sub Rehab (Reddit Migration), Search Lemmy
I think you just go to the top of the page and click "Create Community."
Im brand new here as well, but my guess would be to start posting stuff about whatever your topic is, links etc so people who run across it have something to participate in. I imagine its kind of a labor of love in the beginning but if its not super niche I'm sure you'd show up on searches.
What are you looking to make? It may already exist on another instance and you can just sub there if it already has users.