Then the only concern is if I am essentially the hard money and lending their down payment, coming in at 100% their cost, they have no cash in the deal so if it goes south they can turn over the LLC and I could be left with an under-water deal.

I agree with @Nathan G. protect yourself first.For a quick fix, you can get a handyman to board up the window while you wait for insurance or a replacement to prevent damage and safety issues.

They market Renatus classes where the cheapest one is $2k, the basic Essential knowledge (which I heard i can find somewhere in here) and the investor group will only work with me if I purchase into that education.

There are a number of guys out there teaching seller financing strategy and how you can essentially buy a property with 100% seller financing if you just solve the seller's "problem". 

It's a great way to measure what is essentially the dividend yield of a property.

I have meticulously designed, built, decorated, furnished, cleaned, stocked with hotel-like essentials, cleaned again, and published my property as a vacation rental on AirBnB.

Essentially what I am looking for is maybe some concrete first steps into buying my first Duplex.

It essentially makes any unit a coin operated machine.Link: https://www.smartcoinbox.com/c...

You are essentially asking the BP community whether the asset in CA should be held onto because it fits your life plans a decade from now, or whether the asset in CA should be sold because it fits your investing strategy goals today.

Because he is essentially a lender and he is getting into volume he probably has some additional regulatory hassle to deal with.