Lemmy active users grew by an astounding 1600% in June
From 2,997 active users across all lemmy instances at the beginning of June, the number increased to 52,797 by June 30th. Source.
An active user on Lemmy is "someone who has posted or commented on our instance or community within the last given time frame.” Source. That means lurkers are not counted as active users.
It's gotten way better than a week ago, I'm using Jerboa, they just had an update and I'm really amazed by it. Of course it's not perfect, but it's enough for now.
Main thing is to make an account on any of the servers, doesn't matter which one. After that, it's easy.
Sort on 'All', scroll and if you come across a community you like, click and subscribe.