How should I proceed and what fees will I have to pay?

Your options would really depend on what the specific terms of the contract are. A full consultation would be necessary to properly advise you.

Does a transfer of ownership negate liability of the former owner?

It really depends on what the exact terms and conditions of the sale were.

How can I get my employer to pay me for time lost due to a work related injury?

You need to file a workers compensation claim and hire a workers compensation attorney.

Unless you got sick or suffered some other injury or damages, you really would not have any sort of case.

If an employer hasnt responded in those 30 days, what happens then?

Your lawyer can submit a Request for Default.

Is Negligent Infliction Of Emotional Distress a valid cause of action, distinct from regular Negligence, in California?

Yes, NEID is a separate and distinct claim from just mere negligence.

Can an employee separation agreement be amended after it's been executed?

You can certainly offer whatever you would like, however, at this point, if the settlement agreement is executed and final, I do not see any reason...

Can employees get canceled to work without a notifying?

Assuming that you are an at will employee, yes, this would be legal.

How to incoporate a company ?

It really depends on the type of business, whether you have partners, whether you will have outside investors, etc. A full consultation would...

You should be able to get these from the Court, as they are public record.