You apparently want us to tell you that you can stiff the agent out of the commission. No, there is no three day cooling off period for real estate...

How to open a corporation that hires Medical Professional without being one?

Tell your friend to go see an attorney who does medical companies. It is very unclear if he even can, but in any event you should not be involved...

My car isn’t being returned to me after my step dad said he would buy it and canceled our deal and now is keeping my vehi ?

Not sure what your question is or why you don't just go get it instead of waiting for him to deliver it.

Does my fiancee have a personal injury lawsuit?

Call an attorney. Your post is very vague as to what actually happened or what injuries a doctor has diagnosed him with.

Is it legal to take information from a closed application and message the client at 1 am to berate them about a YELP review?

This is a customer service issue. You have the dealer your email. Call the cops if you feel threatened.

Can I sue a movie theater for only having salty popcorn

You can sue for anything you want but whether you would win (and what you think your damages are) are very unclear. You do not claim to have a...

Nothing in your post describes an injury occurring.

I have a lawyer I am not satisfied with, can I hire a new lawyer to represent me?

Yes you can switch attorneys however I am not clear what your question really is since the entire body of your post does not go to anything related...

After 3 days of the month, are landlords allowed to give a 3 day notice?

Go see a landlord tenant attorney to review the details.

Can a car dealership cancel contract after 10 days and refuse to except payment and take repossession of my car

No. They are supposed to notify you within 10 days. But perhaps you should figure out a way to pay the dealer for the entire vehicle, such as...