This interested me because of my lack of investing experience at the time as well as low on cash at the time to buy much.

If what you've been doing is working well for you I'd keep at it.

Also, I believe a property manage can file a notice to appear and handle them as well.

*Lake Anna, Reston Virginia*Originating in 1990, The Reston Town Center is a major employment and entertainment hub in the area, with companies such as Google, Leidos, Facebook, Microsoft, General Dynamics, and Fannie Mae, to name a few, more than 50 retailers, including an 11 screen LOOK Dine-In Cinema, CitySwing (Golf Simulator), a seasonal ice rink, many well-renowned restaurants and bars, and other highly attractive amenities such as a full service 243 bed hospital, a new metro, and the Dulles International Airport that is receiving $700 million renovations by 2026*Reston Town Center*Source: Rediscovering Reston-- the First Planned Community in the USSource: Washington Dulles International Airport to Expand Passenger and Cargo OperationsOne of the biggest points of discussion over the last few years has been around the office market, and how the rising office vacancies due to the shift towards a work-from-home and hybrid work schedule have pushed many companies to downsize or relocate out of previously major employment centers.

ALE solutions can be a great option as well for insurance placements 

Meanwhile, here is my recent post on cost segregation:  Cost Segregation - The Basics (biggerpockets.com)@Michael Plaks   Well said. 

What I like about what he’s offering is that he says he teaches people to purchase houses, as well as other types of properties, without using any of your own money, loans, or credit.  

I would appreciate any advice on entering this space, as well as any educational content that may be out there.

The difficulty was not finding properties that would make money, it was selecting the property that would make the most money.  

In Essence trade something of value for their time, knowledge and ability to teach you or walk you through a flip/rental/rehab.Best of luck