I don't know if this will be as applicable to a tabletop game but in DWRP I tend to want to have an idea of my character's day-to-day life, so the information I'll want first is on the areas my character is likely to be regularly interacting with. Where they'll be staying, where they'll do their shopping, what the NPC locals are broadly like...

/me nods

/nodnod/ Those are good general topic headers.
Also what sorts of things can act as plot hooks, vs things that you can assure will largely stay the same for the length of the game.