Yeah man, I'm in the same boat on feeling excited for the possibilities here. I'm tired as shit after a hard weekend, and I'm still trying to answer as many basic questions that are within my knowledge as possible :))
On the confusion part, yeah, there will be some adjustment for everyone (thankfully I had a 3-day head start). Just like people know that support@gmail.com and support@totallygmailtrustmebro.com are 2 different servers, people are gonna need to learn to look at which server a community is on