Most of the numbers I've gotten are from reading books or internet research.I've set my criteria to 3 BR 1+ bath SFR's that I can purchase with >$200 cash flow and 12% ROI.The property in the photos was listed at ~187K.

If you put together all the information and script for the inside sales agent then it's a simple task taking minimum time per day.

And not one that’s recommended by every dick and harry on the Internet.

When they request to review the document they will need to deal with attorney-client privilege, which can be a daunting and expensive task.

Then you want to figure out all the typical short term rental expenses (furnishings, cable, internet, utilities, possibly management) and factor in your mortgage and heloc payment.This should give you a good idea of your yearly and monthly profit

I don't know where you found that image and this may be shocking ....But that random information you found on the internet is wrong. 

I'm also trying to find answers on how people come up with down payments using "Other Peoples Money" which seems a bit of a daunting task but perhaps its more common than we think.

I WISH Bigger Pockets existed (I really wish the internet existed :) ) when I got started.

I’ve been looking for a spreadsheet to track all tasks during a rehab, the method of measurement and the price of labor. 

I will admit I didn't know what I was doing most of the time when I started projects, but I am fortunate enough to have help from my parents (and the internet).