How can you serve someone if you dont know where they live?

If your case is pre-Judgment, you can serve her by mail at the address listed on her court papers.

Do I have to file in court for custody?

If her father was the custodial parent, his parents have no custodial rights. You might be able to just show up with the police to get her -...

You have to file a Post-Judgment Request for Order for your ex to reinstate or get another policy.

What is different between a request for order Vs. filing for contempt (custody agreement)?

You will probably have to first file a Request for Order for modification of custody and an order to her to notify you each time she moves with the...

My ex is denying visitation, but by alienation, how do I deal with this? I can't get an Attorney.

Is this a list for minor’s counsel, or? Why is your ex giving you a list?

How likely is it that I will be able to obtain joint custody of my three kids?

There is only one way to stop her arbitrarily withholding the kids and demanding a drug test: file an OSC re Contempt. She has no right to do it...

How do file for spousal support?

Yes - you must file an Income and Expense Declaration, linked: https://www.courts.ca.gov/documents/fl150.pdf

You can find out how the property is titled by paying for a property profile with a real estate broker or a title company.

You will probably have to file a Request for Order to terminate child support if you are wage-assigned which will force the other parent to show...

You are missing that a subpoena is in fact a court order, and the recipient is subject to a motion to compel if they do not comply.