For intents and purposes, assume you have a $100k starting capital, what is the fastest way to reach $1M in the bank? Background; I am interested to learn if I am going about my rental business the right way, or if th...

However, I am learning that by owning the note does not give me the right to access the property.Is there an innovative way to facilitate an environmental study if I buy the note?  

In some areas you can require the doctor to send you the notice directly, rather than the tenant going online and producing the document. 

If I can't, can anyone recommend any kind of income producing investment I can do with this brokerage account?

Same in an apartment, just that the value comes from raising the income that the apartment produces.

My area is quite expensive, are there any areas maybe in Arizona or Nevada that are attractive (Phoenix looked promising with their population growth and cost of living) that could produce more cash flow than my area?

STRs produce more income, but during a serious recession vacations will be some of the first sacrifices people make.

Easiest way to get started, join a high producing team.

It is clear that if you want to advertise on VRBO you'll sooner or later have to agree to their payments T&Cs in order to do so.Even though every year Airbnb continues to increase performance & bookings for my properties, VRBO is still the major producer.

Some other commercial vehicles that produce will against unseen economic forces are Mobile Home Parks and Self Storage Facilities.