So... what's the best mastodon server to join as a new user? - LemmyWorld

I just downloaded the app to see what’s all the hype about, and once again, I’m asked to pick a group, in this case, a server. I suppose it’s like Lemmy instances, so, is there a general one, or an equivalent of lemmy.world in terms of size, interaction, and so on? My mistake if I’m understanding things wrong, thanks!