I have been charged with one count of Welfare Fraud and 20 Counts of Perjury in the State of California.

Never discuss potential criminal matter on a public forum such as this one. If you are being charged with a crime, talk to a criminal defense...

Is it legal for property management to use another company's letterhead and bill for charges?

It may be appropriate. But if the charges were never incurred or the services never performed, then you should not be held responsible.

I acquired 4 propertys from someone that owed me money for a long time,come to find out he acquired them fraudulently

A lot more information would be needed to give you an answer. Since there is probably significant dollar amounts involved, you really should...

Subpoena

You cannot just go out and get a subpoena. You could file a lawsuit and then ask the court to issue a subpoena. If there was some crime involved,...

How can I stop the federal government from garnishing my social security benefits for a restitution payment I've been owing

The answer is most likely yes.

Can I sue daly city for not having built or maintained a traffic barrier on the road which led me drive off a cliff.

It is possible. The answer will be very fact dependent. Contact a local personal injury attorney.

Do I need areal estate attorney or a land use attorney?

Check with your city zoning or planning department. You can also consult with a real estate attorney in your area.

It really depends on what the City will allow. Contact the zoning or planning department and ask them.

Statement given while under the influence

Maybe.

An auto mechanic filed a lien without informing me, can I get the lien invalidated?

It may depend on what you signed. Generally, the mechanic is probably entitled to something for the storage fees, especially since you left it...