2)What are the big risks: I understand the fundamental risk of having one tenant, but looking at a NNN lease what else should I consider?

Tenants are often not the best money managers and allowing such a fundamental expense as rent to be paid on credit stands to increase their liabilities to an unmanageable degree.

After much research I feel like residential is a good place to go get your hands dirty and learn the fundamentals of REI.

To be even further clear, they are certainly not going to take a haircut or a risk to allow Paul Promoter, fundamentally an uninterested third party, make some sort of profit.  

When many folks ask this question, they have a fundamental misunderstanding of how investing and compounding works, as it pertains to both business and real estate.Most people approach getting to 21 doors in 5 years like this:Year 1: Buy 4Year 2: Buy 4Year 3: Buy 4Year 4: Buy 4Year 5: Buy 5Total - 21. 

Anytime I recommend markets for turnkey properties I base my preferences (for market) on two things: 1. the market fundamentals and 2. the quality of the turnkey providers available in that market. 

I have a strong understanding of underlying asset & market fundamentals, with an advanced knowledge of financial modeling. 

I was told that I should stick with solid fundamentals and have a stomach for the corrections as these will principles will make for positive long term returns.

I feel like I have a solid understand of the REI concepts and fundamentals, I felt like practicing on comps was the next logical step to take, should I be doing something else or am I on the right path?

Ask:1) What fundamental skills you should study and in what order 2) What questions that you SHOULD be asking (in order to ask better questions)3) Who you should be dining with now, and type person NOT to.4) If they make their money as an investor, speculator or in the business of providing a service.