Focus primarily on those close to the mean to identify more accurately what things seem to sell for and that gives you a good indication of where to target your negotiations on a property (much like having blue book numbers when buying a car).  

Elsewhere you indicate $110 per month, which works out to be about $27.50 per door per month.

OUCH.At lease moderate the choice to something not only more politically correct but at least technically more indicative:-  Owner, Controller

Letters of Office indicating the official judicial decree granting the executor/administrator the 'official' right to act in that capacity.

Without any background in construction or house maintenance though I'm worried that I don't have any clue what I'm looking for in a rental property.What are the the most important things you look for when first checking out a property that might indicate it's worth a closer look, or you should move on?

I think I have noticed a dip in rental prices in recent months, and online research indicates that rental pricing may really drop during the winter.However, I found a few homes that look like they could give me good CoCROI for this area.

I found some notices posted on the wall indicating the details of each foreclosure and will be attending one in a few days.

Of course rapid resale of a property is one indication that you did NOT hold it for investment, but there are other facts that can rebut this.  

Also could listen to 165 with Natali Morris as she touches on some tax issues.As far as books go I read Tax-Free Wealth by Tom Wheelwright who's part of the Rich Dad team and enjoyed it.The research I've done so far indicated that you don't need to be averse to selecting an accountant who lives across the country from you so don't be afraid to give @Jim Kennedy or @Brandon Hall a call, they both seem to be great sources of knowledge from what I've found!

It looks as if the horizontal masonry grout lines "drop off" towards the outside corner of the building, indicating there could be some settling/shifting in the footings and walls below grade, which can be a pretty costly repair depending on the severity of the settlement.