those I think the basic of my questions.Thank you for responding and helping to understand more. 

However, the stacking method of buying one at a time and scaling is probably much more risk adverse method. 

From what I read in The Economist, listings with updated, compelling photos tend to outperform others significantly.

But I'm getting a pass because the IRS does not verify and does not even ask.Don has a more difficult time with his auditor because he does not have Form 1098, and he does not want to show a form with my name on it, for obvious reasons.

That amount varies a lot. 

Do you know how to read the credit/criminal background?

I'm excited to hear more from you!

If you can find a seller willing to finance you might be able to get more favorable homes.

I did read someone on these forums advising against it too.Any advice/insight about this?

In my experience, cost segregation studies are a lot less than $10-15k especially for smaller properties (6 units and below).