Is it legal for a personal who your not friends with to get screenshots of a post on your page

You posted it to the whole world. It's fair game at that point.

Is it considered being fired if I put in my two weeks notice and get let go?

I think the fact that you already resigned preclude it from being considered a firing. However this isn't going to have much legal significance...

Is it legal for an employer to allow employees to work over time and not pay ot

This is most likely illegal. You should contact an experienced employment law attorney to help you recover your underpaid overtime.

You should call an experienced accident attorney asap to assist you.

I was told by my supervisor to fire one of my black cooks because he is too dark in color. What can I do about this?

This is blatantly illegal. File a complaint with the EEOC.

Can you receive compensation for down time for a "FLOODED" "TOTAL LOSS" TOW TRUCK

You would need to have an attorney review your particular policy.

Can an employer withhold wages/tip share from a server who receives an ATC citation.

I do not believe they can legally withhold your wages. You should contact an experienced employment law attorney to discuss. You may be entitled to...

What can I do about a coworker whom I do not get along with?

There's nothing you can do legally. Your choice is to put up with it or quit.

How do I go about getting unpaid wages from a non profit employer that I use to work for.

Contact an experienced employment lawyer. They may be able to get you penalties and attorney fees in addition to what you are owed.

I am concerned that I will be fired from my job.

You are in a very tough spot. They only owe you your job if you can do it with a reasonable accommodation. Either way you still have to perform...