Examples: I take a refundable pet deposit instead of a non-refundable one or a monthly fee, I currently pay the whole water bill without taking money from tenants because the duplex is watered together (I will eventually get a separate meter but the outlay is more than I want to pay right now) assuming it doesn't get out of control, paid for the new doorknobs on the bedrooms because the tenants requested locks despite the lead tenant saying they would pay for it, planning to replace the microwave hood simply because it's louder than it should be though it still works, etc.I'm probably losing out on a minimum of $100 monthly.

A tax deduction is simply a discount on what you have to spend.

I interviewed with a KW brokerage near me and felt that they offered a great training program but it simply wouldn't work with my schedule. 

I'm not asking for free work, but simply a reliable contractor.

Therefore, simply quoting a general expense ratio is not the correct approach. 

I don't understand how some wholesalers can spend thousands on marketing, guru courses, etc. but won't simply get a real estate license. 

"offered to let me leverage his FHA"I am no legal expert, but this sounds like one of two things: 1) tip-toeing around the edges of mortgage fraud or 2) simply a bad idea. 

For example, If you invested into an apartment complex that was bought at $2,000,000, had a $200,000 NOI (Net Operating Income), had 100 units, was 100% occupied, and was bought at a 10% Cap Rate with just $25,000, then at the end of 5 years, lets say the property did great and was sold at a 8% cap rate, you would make a 188% ROI (Return on Investment) giving you back the $25,000 that you invested plus an additional $47,000 that you got for simply putting in the investment and watching it come into your bank account!

Simply because 75% or more of the movement is of the wheeled variety.

Simply because he thought that he could get more.