There are bad properties to buy in NNN just like any other sector.

I don't know the commercial loan sector at all.

Depending on what sector you're in some will yield larger profits than others.

There a lot of jobs related to real estate and pretty much any career you choose can be applied to the real estate sector.

Real estate falls under the financial services sector and is considered an industry itself.

Hi @Jerry Shen - Welcome,As always on BP - you are getting some fantastic advice from posters (as well as a few fishing attempts- to be expected)Another option to consider is crowdfunding via a few of the top tier portals-  providing an easier way to diversify by  type (debt or equity), sector (MF, SFH, Apartments, retail, office, ground up developments etc),  amount and geographic location.

I pay particular interest to population growth, wages, job sector diversity, and crime. 

Seattle, Denver have had a lot of growth in the tech sectors and the housing markets there have become very competitive, office space vacancy is down, multifamily construction is growing and rents are up.

We have had quarterly yields that are approaching mind boggling numbers across multiple sectors.

Matty - Yes she is pushing for this, I believe the idea is to replace the failing automotive jobs with alternative energy jobs, especially in the engineering sector.