Rather than explain it, I'll ask you to read it for yourself.

To get an overview of the total market, read things like ATTOMdata com reports and Zerohedge.  

Unlike residential properties like duplexes, commercial assets like 8-unit rentals frequently call for a different strategy when it comes to finance, management, and tenant relations.Examine carefully the markets that correspond with your investing objectives when considering out-of-state possibilities.

Real estate has historically been a long term play.this idea that someone who otherwise never cared about real estate, can simply dial up a realtor and buy instant 4 digit monthly cashlfow is something born out of YouTube.

I haven't read it, but "Real Estate Partnerships" by Tony Robinson and Ashley Kehr is probably something you'll want to reference to help you get started. 

@Doug DavisI guess I read your BP calculator as saying you were paying for a $200 cleaning every month.

Usually your state and local landlord/tenant laws specify how to handle abandonment so just read up on those and follow their rules. 

I just got confused as I read that the best would be to open a Corp and then use a land trust to buy the liens. 

Please read MY advice.

Mixed use gives you diversification, but be careful with the restaurant size on the first floor.