I am way to old school to try any of this  LOL.. of course I get 100% of my business by referral so I have no need to market anything and being old school I pick up the phone and talk to my investors in person ..

Happy to buy someone some lunch and pick their brains! 

Limited appreciation, old housing stock in need of major capex, population decline in many markets...Can you pick a market that's a couple hours away so the price point is lower, but you can be in-person and hands-on?

You can ask to meet up for coffee or something and pick their brain about the market.Maybe use here to ask for book recommendations. 

Appfolio is a great property management app, and pretty easy to pick up on. 

However, when picking a market it is important to choose one that isn't totally dead in the slow months.

As the saying goes, "in a gold rush, be the guy selling picks and shovels".

First of all, you picked a great PM with WHM - Ed has been running a very good business for a long time! 

Your best bet is to find someone doing the work in your area and picking his/her brain. 

Pick one forum where your question makes the most sense.