What are the areas with high concentration of blue collar workers to fulfill the above-referenced projects? 

Keypad locks with changeable access codes, cameras over the doors outside side, hooked to a dvr with internet access protects everybody involved.

Whatever RE track you decide to pick, concentrate on it until you fully learn it.

So again, you need to decide for yourself what area of real estate you want to concentrate on first - get educated in it and start doing it, then pick up the next niche in RE and do the same, and so forth.

I don't see much about them on the Internet.  

Now I concentrate on being the visionary in the company while having others do the implementation of my "Vision".As I am typing this, I'm watching my VA's on a separate laptop in my office skip tracing high equity foreclosures.

Since I found the BP website about 4 years ago I have dedicated myself and I have all the time I need and spend all I can on the internet and I read a book about every two or three weeks. 

Florida I concentrated on multifamily but I don’t see many multifamily properties in this area.

@David MoreheadBooks: Due Diligence Handbook (super important and often missed element of the underwriting process)The Real Estate Game: The Intelligent Guide To Decisionmaking And Investment (solid overview by an experienced operator)How to Create Lifetime Cash Flow Through Multifamily Properties (free, solid book)Articles:How to Avoid the Most Common Commercial Due Diligence MistakesDeal Screening Checklist for Passive Multifamily InvestorSpend time poking around the Internet + networking with local multifamily investors to understand how to underwrite and what assumptions to use. 

Biggest concern with any of the spreadsheets you download off the internet: nobody shows you monthly returns.