I've seen a lot of people mentioning reading books and soaking up knowledge to start.

Expenses are going up just as fast as rent anyway.

If you consistently analyze properties, recognizing a good deal will be much easier when it shows up.

This is not a "slap them up" construction area like others I've seen. 

Look up Milwaukee real estate market on YouTube.  

BTW: most owners that have hired a PMC, don't want to speak with you, much less meet with you in person to hear a hyped-up sales pitch.Also, you want to do rental arbitrage - so, you will need to be properly licensed to manage properties you do not own as required by your state & local laws.- why would an owner want to do business with someone NOT properly licensed?

So I ended up using 0% interest business credit cards which I liquidated to purchase and renovate my property (total credit limit of about $95k total).

Then once you've fixed the property up and at least have it listed for rent you could refinance into a DSCR loan.

Due to recent building code changes, you can build a framed building up to 4 stories on a slab, which significantly reduces the overall cost of new construction.

Pretty easy to get a $6,000 to $10,000+ sewer dig up and replace cost if it's a perfect wide-open area.