Bought CA non judicial foreclosure-when does liability begin

[Eric Frentzel]

I bought a house in a California non judicial sale. I got a receipt from the auction place, but the title company is saying it will take a month before I  receive  deed. 

Am I still considering owner now? Should I get dwelling a insurance now? 

Also, the house has tenants that I will need to evict, should I get liability insurance to protect against any claims they might come up with? 

This is my first time doing this and I really dove in the deep end - wanna make sure I'm doing it right. 

Thanks for any help!