About as helpful as having a full toolbox without any idea how houses are built.You do not combine retirement accounts, depreciation and LLCs.

Combined with the good school district and neighborhood, they typically end up staying for years and never moving out unless they really have to.

Another option. 23 year fixed rate mortgage, combined with one of the above.

How does a self directed IRA compare to an opportunity investment zone and what is the most common strategy used in combination with either?

Through the majority of podcasts I've listened to and the books I've read have made a prominent point about learning REI vocabulary.As a new investor yet to make a purchase it would be a great asset in combination of learning from books and media that more experienced and adept investors would share thier knowledge of the vocabulary in REI, preferably in a list/linear format.

It does seem inevitable that this will impact the housing market, since the interventions are a combination of a band-aid and kicking the can down the road.

A combination of competition for properties, low refi appraisals, and fairly low refi LTV make extract of full investment very challenging (Most of our properties have all the investment extracted, but they got assists from market appreciation). 2) do not expect the BRRRR to help the cash flow significantly. 

Anything under 80K is far below the median and is going to be a combination of rough neighborhood and rough condition - typically within the dark blue shaded area on Trulia crime maps.

It may not be easy to find, but I suggest combining a BRRRR with the house hack @Twana Rasoul suggested.  

In terms of analyzing deals, I would say it's a combination of knowledge and experience.