You would need to contact the Department of Motor Vehicles in Florida to determine what the requirements are.

I am going to india for H1B stamping and i have not filed by tax returns for year 2012, taken income tax returns extension.

Your taxes is a tax question, not an immigration one.

Can a illegal alien testify in a court of law

Testifying in court does not depend on immigration status.

Can we file LCA & H1B Petition after the termination date as our US entity was sold out recently and the new office started now.

Your employer needs to retain an experienced immigration attorney to determine what needs to be done.

Oath for N - 600 and N - 400

There is no oath ceremony for N-600s

K1 visa interview , travelled to USA in 2003 answering no to cimts having juvenile conviction and DUI conviction as adult

Yes, that can be an issue. The immigration consequences of convictions depend on the exact language of the statute under which the conviction...

Can this lady be deported? Is this fraud?

Only ICE can deport people.

If I have a visitor or tourist visa, how can I obtain a work permit through the government?

Nothing in your posting would make you eligible for a work permit. For am employment based visa, you must first have an employer willing to...

If I have a visitor/tourist visa, how long can I legally drive a motor vehicle in the US for?

Entering the US frequently for six months at a time will eventually result in you being denied entry.

Any tricks to get through Administrative Processing at Ottawa Consulate for H-1B Visa?

There are no tricks. Administrative processing takes however long it takes the consular officers to resolve the issues that triggered it.