Deceassed & no will

What is the name of your state (only U.S. law)? I live in California my mother passed away while she was in California with me her only child & she did not have a will she owns a house in New York how do I change the name on the deed to my name & where do I start What is the name of your state (only U.S. law)? California

how is title held to the house? Does she have a mortgage? Creditors? Spouse?