CA landlord-tenant law question

I was curious if anyone here has any experience with, or specializes in California Landlord-Tenant law? If so, I have some questions I'd like to run by you.

I'm a paralegal for an estate planning firm, so obviously, landlord-tenant law is not our area of practice. I'm in the process of assisting the attorney I work for on a landlord-tenant issue that some friends of his have asked for his help with.

If anyone can help, I would greatly appreciate it.

Outside of my knowledge area for the most part.