A lot of what will work the best will depend on how you want to direct the bigger business model.

I just read and took comprehensive notes from three books on real estate investing:- Long-Distance Real Estate Investing (David Greene)- The Book On Rental Property Investing (Brandon Turner)- Home Owning For Dummies (Eric Tyson & Ray Brown)I was particularly drawn to Brandon Turner's REI business plan templates for new investors, and I liked his ten-year fourplex trade up model.

They realize the limitations in their model but I suspect many of their customers do not. 

In a previous episode, someone mentioned a passive income business model that might be a good fit for me. 

Not a good business model imho

Airbnb and roommates are two different business models.  

Model the best and take action once you have knowledge you can apply 

BP podcast #185 with Bill Powers has stuck with me since listening to it years ago.Has anyone done this RTO business model he talks about (basically renting with $150/month applied toward purchase price)?

If you’re like most, you’re having to revamp your business model in order to carve yourself into deal flow.I buy bank originated junior liens and seek to obtain loan modifications for my full-time work.

When I get to 25 units maximum my business model will obviously become unsustainable.