Going into second interview need help please.

[Krishna Shiwdin]

I worked for my parents company they own 100 units half in the Bronx and half in Manhattan. I've interviewed at a real estate mgmt company that owns 400 condos/co-ops and rents them (will still be helping my parents, I just want to feel successful without riding their coattails). The first interview went well but they've called me for a second. I feel out of ammo! What questions should I ask them? How do I prepare for this, and how to I help the people who help me on this website? I know I'm one of either two or three people who have been called in.