Can I file another I-140 in EB 1 C through same employer without withdrawing current Motion?

The employer will need to withdraw the pending MTR first.

what should I write in the new status and effective date of change? In the I- 539 form, part 2?

If still facing confusion after that then that is the best indication that need to work with an attorney.

I am an EU citizen and I have an LLC incorporated in Delaware. What should I do to obtain a car dealership license?

You need to look into E-2 visa before considering anything else.

Almost anything can be "legal" as long as the parties agree to it. There is no reason why a lawyer will not charge additional legal fees for the...

How many years do I have to live in states to get a green card or to be able to stay here legally?

Length of time spent in the US on various temporary visas does not bestow any right to permanent residence. Invest in a consultation with a lawyer...

I am US citizen and I filed I-130 for my minor son and the application is at the NVC for processing?

You are required by law as the sponsor/petitioner to submit an I-864.

1st day of 60 day grace period. Is it last working day? or next day?

The 60 day GP countdown begins on the very next day after which you are no longer on the company payroll.

Done on Form I-539. Carefully read the instructions for eligibility.

Academic Financial Aids?

I agree with my colleagues on this one.

I agree; you must, however, have worked for the employer through which you gained GC for a certain period of time after having obtained LPR status.