Also, this can be the danger with areas that are heavily concentrated STR pockets and have a lot of newbies that enter the market only to get fizzled/beat out by experienced competitors. 

Your guru groups concentrate on the artful side with the paint by numbers set of making a deal because it's the easiest way to develop a product to sell you!

There are many ways to make money in real estate in concentrated efforts.

My ultimate goal with real estate would be to have enough passive income to be able to provide extremely low priced apartments to refugees (they then could concentrate their very low income on getting diplomas to break the poverty cycle they usually get into when they arrive) and to fund a NGO to help them settle and get a good start in their new host country. 

I am not aware of a concentration of military but they like living iff route one which stretches from Fredericksburg to Alexandria and paases both bases.

I have some experience with vacant land flipping but I would like to meet and communicate with other investors at Biggerpockets who actively concentrate in vacant land investing, subdividing, and flipping.  

Do you specialize or concentrate in a particular class of property?

http://www.forbes.com/sites/timworstall/2015/08/02/uber-reduces-capital-concentration-and-increases-the-number-of-capitalists/I thought this article was an interesting one and wanted to share.

Considering my hefty goals, investing in this space is where I need to concentrate my attention.

Concentrate on your career, max out your 401k and do a good job to maximize your salary and bonus for the next 10-15 years.