Focus on math specific to that area and keep it simple, don't start with spread sheets, and internal rate of return etc. you can do those later or not at all.

@Christian Estrella simple math. 5/100=1/20.

For example, in my area I have to give a 14/30 day notice meaning correct the violation within 14 days or be out in 30.Keep it simple straight forward and professional. 

@Alleia James Well, to keep things simple we'll use profit and cashflow interchangeably (although there's additional ways to profit off of REI other than just cashflow).

I enjoy simple things in life and do think beauty is in the simplicity. 

The bank was notified of the trust and trusteeship, and later the seller assigned the beneficiary interest to an entity of my choice.Years later, they both passed, and it was a simple matter for me to sell the property as the Trustee. 

In addition, average costs for things like backed-up drains, toilets, and misc simple repairs are 3-4 times what we pay for properties here in the LA area.

Are there some general guidelines or maybe a simple agreement that is used to spell out who gets paid what for doing what in acquiring an selling the first property? 

I'm looking for some advise - I'll try to keep it simple and spare you the details.  

A simple V-Lookup in Excel is pretty straight forward.