Just joined Lemmy today. From what I understand, there are different Lemmy instances that host different communities. I supposed that to interact in a community hosted in a certain instance, I would need to create an account for that instance. Ended up creating 10 different accounts.
You don’t need an account on every instance. As long as the instance is federated you can pull the content to just one account. For example my main account is on lemmy.zip but I can search and join communities on other instances from my account on this instance