You can run a great campaign and really care about your players and your game. But a lot of us get off to a wrong start. So here's what you do. First, schedule a session zero. This is a super low pressure, casual chat about your game. I've been doing session zeroes for about five years now, and it has dramatically changed how I run the game. This is my rough checklist for a campaign session 0, for the public.
Thanks,
Ethan