We bought a poorly advertised property that we believe is worth more than we bought it for (not basing that just off zestimates, estimates etc even though they would agree).Is an appraisal ordered by the bank?

The banks and private money lenders out there target mortgage brokers and advertise to them constantly. 

I recommend setting up keyword alerts for each area as they are discussed in the forums daily with advertisements posted in the BiggerPockets marketplace hourly.One thing to note when looking at the individual markets, you can make or loose money in any market.

There could be other things that are not optimized for your rental properties.One thing I will note if you end up looking locally for a professional, is don't get hung up by looking for someone advertising themselves specifically as a real estate CPA.

Yes there are gurus who advertise being able to invest with no money down or Other People Money but for the inexperienced Investor its nearly impossible that's the reality. 

Get yourself a google number for advertising and tenant maintenance calls.

I'm also suspicious of people who advertise seller financing on places like Craigslist. 

Put the house up for rent, advertise at your local housing authority, and if a gov subsidized tenant applies and you like them rent to them.

The good news is that the vast majority of syndications are 506(b), but the only way you can invest is by having an existing relationship with the syndicator (they are not allowed to advertise their deals).

You can also try posting advertisements here on biggerpockets.