Can my husband who is deploying to Afghanistan for over a year put limitations on a poa for our son if we're still married?

Is the son a minor? He can limit your exercise of his rights in his discretion.

Fraud statute is tolled by your incapacity. Also tolled by reasonable discovery.

What options exist to obtain digital copies of my intellectual property held by an ex-girlfriend? Can I sue for their return?

Talk to a local lawyer. If she erases them they are gone. If you start litigation she could be put in a position that destroying evidence would be...

Will question: on life insurance, my house, jewelries, rare collectible items, etc...

There are no taxes on life benefits generally.

Is betrothal legal within the United States, even to those who are minors.

You are too young to contract.

Is it legal for two minors to be betrothed in the United States?

It cannot be binding.

Can my son be sued for damages if a person already recieved a settlement check from my insurance company

Call your insurance. They may have a release. They should provide a defense.

Why can't a sole proprietor therapist in private practice can't establish an LLC?

Statutory

Company Founding Shares of Stocks Split During Divorce

Make a deal. You don't want to be in business with your ex if you can avoid.

Can I operate my private practice under my consulting business license?

You can probably operate them under a single license.