Also, get in touch with some real estate representatives in your area and those who’ve been doing this for some time now so that you can learn from them.

As another poster pointed out, Dave Ramsey focuses on consumers and their use or misuse of credit.

It will help us assess where the "bar" is in terms of competition and what consumers are looking for on the platform.

This negative position can consume years of cash flow to recover.

Foreclosure is expensive and time-consuming, so most lenders won't even begin the process of foreclosure until payments are 4-6 months behind.In a non-judicial foreclosure state like Georgia, the four weeks of public notices are all the advanced notice you're gonna get as an investor!

Door lock, detector batteries, other consumables, replacement of damaged or disappearing items like pool towels and linens, replacing blown out screens (I spent over a grand just on screens last year though we did have a freak huge hail storm).

One of the most important aspects but its always a time consuming aspect that most put off and miss out....

The investor will start with a large negative position that will consume the initial cash flow.  

I've gone broad because I want to learn about things outside of multifamily and I have experience as a consumer in strip malls and storage.

As far as cost goes, again, a lot of people fail because they think like a consumer.