Style of a structure is in the eye of the beholder to an untrained eye, including mine at times as there are technical aspects of design that can overlap, the 50s and 60s styles being mixed.

Can’t really analyze cleveland by the zip code because too many street specific lines and school districts overlap.

I assume there's a lot of overlap but does one go deeper into the material than the other?

There's good deal of overlap between business and it seems like being able to maintain accounting, marketing and knowing how to work with people helps everything.As far as ACTUAL work goes, I'm working 20hrs a week on maintaining my rentals and another 20hr on initial rehabs/looking at deals/networking.

These will give you a good foundation and you'll notice some of the information overlapping and pick up a additional nugget or two from each approach,  as you know each individual note investment will be different. 

As a multifamily investor, I do work with a variety of different agents who also overlap territories/regions when I'm buying.

I'm not so consistent that I am OCD about it, but there is a lot of overlap in my habits of thought and yours.

I agree with you....to a point...but this topic is perfect example of a lesson I learned from a past tenant that worked as an asset manager for several different multi billion REITs...I would  ask her about her world managing industrial and warehouse space for the REITs and one time she mentioned that in her company, and much of real estate business, there were two types of asset manager: First(like her) that was office/number/planning proficient and Second(like me), that was handy/technical/hands-on/field proficientI would offer that, one is not  better off being more of one than the other, they both need to have some overlapping abilities or to be able to overcompensate in their area of expertise.

Line Graph of AirBnB Annual and Monthly Income and Long-term Rental Annual and Monthly Income.You can see points of interest, where the Annual data lines overlap and Monthly data lines overlap, this is the break-even point for AirBnB and Long-term rentals.

One of the primary reasons multifamily CRE (in particular) has performed as well as it has over the last 40 years, is because it has directly overlapped with a long term credit cycle of programmatic monetary easing (1980 - current, see long term 10-year UST yield chart for context).