Just unsubscribe from their emails. Not a legal issue.

Absent an injury nothing to sue for.

My wheelbarrow is missing. Look in your yard. Not a threat.

Your parents might get mad at you.......

This is one long run on sentence with no real question. Take all the documents to a local attorney for a thorough review.

It doesn't sound like anything was seized, so probably nothing to do about it.

Completely legal. He can always look for another job.

Since we know nothing of the situation, we can't answer that.

These are questions for your lawyer. This is not a DIY project.

What is the most important thing for me to do next to keep my minor son from getting a felony charge and/or going to jail? Hire a lawyer.