You want a checklist?
Here goes:
1) Get a sense of humor.
2) See someone about your fragile ego. Your mates in your new job will make short work of your impressive four engine heavy jet time.
3) Make sure someone with a clue interacts with passengers, FBO staff and anyone else that may require some level of personal interaction. Your insecurity and inability to lighten up will dick things up if you don't.
4) Allow yourself to say "Well, we always did X at Y airline." only once per month. (you may consider never saying it, but given what I have seen so far, that is entirely too much to ask.)
5) Quit taking yourself so seriously.
6) Quit calling me "Captain". I fly corporate, not 121.
7) Don't forget to have fun. You may need to hire someone to follow you around and remind you of this.
Other than that, just remember that you really have no clue what you are doing for the first six months, so be humble and use that charming personality of yours to get your new co-workers to fill you in...