Respectfully I would disagree with part of your message. It sounds a bit like you're encouraging some degree of instance tribalism, but the whole beauty of Lemmy is that I can be a regular and full member of !something@lemmy.ca with my @lemm.ee account.

For new members, I would have the opposite advice: don't pay too much attention to what instance a specific community is on. Just treat each community as its own entity and each person as an individual.

The reason I bring this up is that I think useless instance tribalism can be a real issue on Lemmy sometimes. I have seen statements too often along the lines of "oh you have an account on <instance>, so I will just ignore you".