I have found that almost all of the books contain some valuable information, the tough part is determining what is viable and what is "smoke and mirrors".The one book I have found most informative, correct, realistic, and instructional is: "The Pre-Foreclosure Property Investors Kit" by Thomas J.

So you have the air grate to house, air filter behind grate, cavity for return (containing dust, bugs, spiderwebs), and then the gas heat unit. 

We're just experiencing a much flatter curve, which makes it easier for us to trace and contain.

I think we paid around $150 and felt like it contained a lot of the important stuff and was fairly easy to navigate.

My observation is based on selling excess solar panels (container left overs from Sampson county solar farm build,) primarily to off-gridders.

I'm sure that you are already aware, as the info is contained in the coursework required for you to obtain you real estate license, that demand for real estate and appreciation is most heavily influenced by (1) population growth forecasts and (2) job growth forecasts. 

@Nat Chan   Depending on your tenant base you may or may not get them to put TP in a container and not flush it...

It contains the wisdom of @Tom A. explaining that there is both opportunity and peril in Detroit (probably not unlike most other urban centers) and Scott K. posting comments without being totally negative.

Write them a pleasant letter containing something along these lines: Dear Tenant, It has come to my attention that you and/or your guests gave been smoking marijuana within your apartment.

Same for electric meters etc.I don't know how it got to be this way, instead of the typical:351 NE 4 STREET unit 1,2,3 or unit A,B,C...The problem is it appears some companies does not know how to deal with a "hyphen" in the street number, and yet when referring to the entire property, a hyphen is used in the official address.When I went to the city to turn water on, it's the water for the whole building, and their property database needed a pure numeric number, and they just randomly put in 351.Recently I contacted FEMA to filed change of map amendment to get it reclassified it's flood zone so I can reduce the flood insurance, FEMA told me they can't process my application because the street number contains a hyphen.