I only know these things from having to learn them myself.

Lots of younger people moving in but so many older people dying that it makes the overall population growth negative. 

All units are cleaned well and some updates have been made to paint, flooring, bathroom fixtures, and 4 new windows.Here are the negatives: No central heating or air, built in 1946, the duplex is metered together & costs approximately $150 per month, there are small waves in the flooring in 1 of the bedrooms, no stove or other appliances yet added.My thoughts: Some of the numbers seem too good to be true but at the same time I can't help but see big rehab numbers if I need to get HVAC and ducts installed (this makes me the most nervous).

I only have 1 credit card now.

Why would you purchase a property with negative cashflow?

Or additional for short term capital gains, as I only owned the property for 3 months?

First question, if it negative cash flows why are you buying it?

I only have hardwood, no carpet. 

I really think lower interest rates will stay, and negative interest rates may arrive sooner than most think.

My family is amazing and they ended up gifting me the 5 acres of land, I only had to pay for the attorney fees to transfer title How did you add value to the deal?