Here are a couple of videos I've recently watched and enjoyed the varying perspectives.Phil Pustejovsky - https://www.youtube.com/watch?

Some only do HOAs, some actually only watch homes.

I'm unsure what the right path is, but I've been reading & watching podcasts about investing in owner-occupied, single family properties.

Another thing to watch out for is to make sure you have built in a large enough profit margin.

Especially now that you've posted your suspicions on a public forum, I'm not an attorney, but I've watched enough Law and Order that I could see there being the possibility of you being charged for "Aiding and Abetting" their crime by not reporting it or "Criminal Facilitation". 

Here are some key strategies, pitfalls to watch out for, and advice for investing in the Houston market:Highly Profitable Investing Strategies:Cash Flow Properties: Seek out real estate in areas with high demand for rentals and good potential for cash flow.

Buy wisely and watch the budget and you should have instant equity. 

I’m a positive pessimist, I see opportunity everywhere and when my spidey-sense starts a flashing’ I pay close attention to certain indicators for signs I may want to button down the hatches (put money in money markets, ramp down stocks, buy more real estate assets, other fun strategies…), so here are a few more indicators to watch, all you smarty-pants Skeptics out there: (This is not financial advice).

Watch your expenses.

Recommendations on content to watch/read to learn the essentials as a beginner?