I’d say, wrap your head around the core mechanics, Contests and Emblems and Resolve, and other wise trust your existing rpg instincts within the new game’s vibes. That’s what I do when starting with a new system.
Give the player and arbiter principles a read through right before starting your first session. Perhaps point it out to your players.
I find new BK players neglect the benefits of team work. It’s super powerful using assists