It’s basically just one button. There’s a podcast I like and there wasn’t a community so I just started one and had the first post up within a couple minutes.
Just make it clear what kind of community you’re starting in community info throw a couple questions or posts related to what you’re interested to up there and see if anyone bites.
You don’t need any technical knowledge to start a lemmy community, It isn’t like starting an instance. It’s just starting a group within whatever instance you’re part of already. And all the basic tools are already there.