They sent us the video, negotiated the terms over the phone then we sent an international wire transfer to the broker to hold the property.

You dwell on one that you feel most comfortable with. 

ALl that work and he is back to square one.I feel so horrible for him because I know how hard he has worked, and put the money he has been earning into buying this equipment and the trailer instead of wasting it on video games, etc.

I didn't own property in RI when I lived out of state though.I usually encounter the out of state issue at closings when one or more of the sellers are out of state (since the sale is subject to non-resident withholding).More rarely I encounter it when I run across tenant issues and the out of state owner has failed to file the nonresident landlord form with the RI secretary of state, since the consequence is "rent for the dwelling unit abates until designation of an agent is made and landlord shall be subject to a fine of up to five hundred ($500) per violation".Unfortunately the first time some out of state owners find out about that requirement is in eviction court when they find out that not only can't they evict, but they actually owe the tenant any rent that was collected during the tenancy before the form was filed.

And planning commission videos of their discussions of it.

What, in your opinion, is the best video game for getting a true feeling about how real estate investment works?

If he tries to break in call the cops show the video and have him thrown in jail.

Watch You Tube videos until you find one that matches your needed repair.   

Also, the property has a detached garage in the back of the house that could be a good ADU (Additional Dwelling Unit).

I have watched the tutorial videos, and I know they have phone support, but I learn better by seeing and doing.