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.
Considering that not every instance is federated with every instance, redundancy is a good thing.
But 10 seems a bit hard to keep track of tbh.
Pick one of them to use for a few days. Once you get a feel for things, then worry about the others.