@James Wise and @Paul Weller - One way that I think the metaphor crosses over is in the space of banning vs. taxing.When marijuana was banned, a broad and uncontrollable underground operation emerged to skirt around the laws. 

These credentials allow her to perform services like representing clients purchasing and selling homes, providing full-spectrum property management, finding and screening tenants for rent homes, and preparing loan disclosures for investors offering owner financing.

You could stipulate that the Buyer can inspect the property with an accepted contract.It is very difficult to market a property to a broad audience (IE on MLS) with a tenant in place.

Reuben, two suggestions on opposite ends of the spectrum.  

Most of what I have seen of the content many provide is very broad and recirculated from one to the next that may educate you but not teach you. 

The returns will be lower in the spectrum but risk and predictability is pretty good. 

Commercial is very broad & many lenders specialize.  

It is typically on the lower end of that spectrum for a flat slab.  

More broadly, returns are built around 'expectations' of future performance.

Broad stroke conversation starters.