Xavier Wharton , plenty of non-real estate books on the topic and lots of research from Harvard, Stanford, Wharton, etc.However, the content is geared towards managing larger organizations/corporations and I used to read them when I had oversight of 600 people in corporate America.

If it isn't habitable, then conventional financing for non-owner occupied wouldn't be an option regardless if you qualify or not. 

The property was purchased with a tenant in place so it was immediately in service if that matters.

Hopefully one day you'll be big enough to actually NEED that service, and if you didn't plan for it at the beginning then whatever profit was left is either at zero or in the red.  

I have found that there are alot of non-qualified tenants in NWI looking for properties (I know because I have 3 up for rent right now).

You can get the numbers from different services on the internet.  

Also, I'd probably focus on a couple non-judicial states (faster FC) and a couple judicial states.  

I am a Real Estate Broker And I have the strength and resources to help my clients receive the highest degree of personal and professional service.

On the subject of non performing notes, When discussing and implementing a loan modification with the borrower, are there usually state laws or regulations (In general and/or at all) that come into play and how much do they affect loan modifications or if at all?

This is why I have told people inquiring in the past 25,000 up front non-refundable and then 50/50 split.