After researching further though on social media and then criminal records I found about 12 previous arrests and numerous convictions burglary, theft, criminal trafficking, molestation (don't think convicted), battery. 

If you associate his name with an article and its on a reputable website (news) or even just their social media, it's a quick google search for his name by a PM, landlord or interested LP to throw up red flags.

I’d love to get creative with marketing without spending a ton, whether through social media, local community groups, or any other cost-effective avenues.

It goes deeper than that.NYC Liberal policies, including strong tenant protections, increases the risk of failure so much that the risk far outweighs the rewards.Financial ruin is just around the corner for the small Mom and Pop Property Investor that it doesn't make sense for them.The Tenants will have free Attorneys that are bent on delaying eviction cases so long that it stretches into years while Mom and Pop suffer from lack of rental income and still have to pay all the bills and do the management.Additionally, the increase in homeless living rough in the streets due to Sanctuary laws causing a lack of shelter beds, then evicting shelter residents after 30 days creating more homelessness, policies that tie up the Police's ability to arrest perpetrators, etc. only causes Mom and Pop to sell out at large discounts to larger Landlords who are capable to use Economies of Scale to eek out a profit.These larger Landlords will eventually turn a much higher profit as the pendulum will eventually swing towards the middle when the NYC Voting population eventually realizes that it's not a conspiracy of the Rich that's causing the Wealth Gap to increase.It's the same liberal laws that encourage people to become lifelong tenants, small Entrepreneurs (including Property Owners and small Mom and Pop Businesses) to be destroyed, and Rents to rise astronomically as housing becomes scarer even when the population declines by as much as 7% in the last several years. 

I work in the social services field and have become aware of these types of places and am wanting to learn more about them from the investors perspective.  

Try some Ohio REI meetups or social groups—you’ll pick up a lot.

Now you are instructed you can put "GP" or "Owner" of 50, 100, 500 etc. units in your social media or your website and just like that you have yourself a track record. 

I've also posted the listing on my social media accounts.  

@Josh WellsRecommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

We're having our monthly Austin Investor Social Hour and there will be plenty of househackers and investors there!