Just be nice and do what they ask. If you need more time, ask for it. The nicer you are to them, the more they will work with you.

Do not file an Amended Petition, it will likely delay your hearing. File a First Verified Supplement on pleading paper addressing the issues.

Yes it can be filed but you need to appear and let the court know you have moved if he refuses to dismiss it before the hearing.

You should not need to correct your birth certificate. There are other ways to prove paternity. Speak with an attorney.

You CANNOT open a bank account for an estate unless probate is filed and Letters are issued. What you need to do is complete a Small Estate...

No, court permission is required to file litigation anywhere in CA.

If you want to get what you are entitled to, get an attorney. It is clear your siblings are not going to give you anything without you forcing...

Your family should pick one person to speak with the DA and push for prosecution. I am sorry for your loss.

No. Complete a Substitution of Attorney.

If you have not signed with them, don't. Ask for copies of your documents and get them signed in front of a notary. Those are outrageous fees.