Should I focus on teaching him the basics of personal finance, like saving and budgeting, or is there a way to introduce him to more advanced concepts like market analysis? 

Since yours is only water and heat I would recommend you charge 50% and lower the rent cost rather than factoring it into the rent price.

Please note the information provided below is a layman's definition designed to provide a basic understanding for the general audience.

A good starting point would be a 10% 2nd home loan or an owner occupied 5% loan where you can convert a basement or studio into a simple 1 bedroom unit and basically let your guests pay your mortgage. 

I went to his preview event today,  where they give you some basic info, and try to get you to sign up for there 3 day course for $997.

It sounds pretty basic and bare bones to do MTR in Phoenix versus what else is most likely out there.

They basically are requesting private lending for their rehabs, say 35k, with a promise of a 60% roi in ~50 days with a committed buyer the ARV.

While state marital property laws differ, there are 2 basic categories.  

Of course the worst case is actually getting lawyers involved and I wouldn't go that route I just wanted to make the basic contract law argument about the PoA's limitation. 

It covers a basic human need (shelter).