Speak to your accountant..............

How can I sign the recorded owner's deed to me in the presence of a Notary when he is deceased?

You cannot only the estate of the the deceased recorded owner can make such transfer.

I am my parents POA, I have handled everything to date,

Unless your POA gives authority regards your parents estate matters then you are not entitled to copies of there will. Why don't your parents...

Any kind of sex with a minor is illegal and criminal

Most likely since you moved from and independent Contractor to a salaried worker

Only those mentioned in the will are entitled to inherit. If your parent or you are not mentioned in the will then you don't inherit anything.

Would it be any problem while filling my green card if my fiance changes her surname in court marriage certificate?

It would not be a problem if she changes her name to her married name. However note you can only file the I-130 after marriage you cannot file...

I'm I responsible for School Taxes and County Taxes?

You are responsible for the taxes has the owner of the property. The agreement btw you and your mother does not relieve you of your obligation to...

How do I get property in my name?

The property does not have to be specifically mentioned in the will it passes under the residual clause in the will. The wills will have to be...

Can i submit an immigration application for relatives before oath ceremony?

No you cannot , you are not a citizen until you have actually taken the oath and received the certificate of Naturalization.