The articles you read were posted by one particular investor who was trying to manipulate the other investors. 

This team consists of an Investor Focused Agent, Lender, Contractor, and PM.Read this article on the "core 4".

He's also written a few great articles on it. 

Save related articles to the cloud for reference. 2. 

While you may not be considering moving to a market and house-hacking, I think this BiggerPockets article still offers great data for out-of-state buy-and-hold investors.Key takeaways: Fayetteville, AR and Indianapolis, IN may be good places for you to start if you're new.

Why don't you do a LOT more research here on BP, via articles, books and podcasts, then apply what you've learned and then ask clarifying questions on the forums?

Prior to these neighbors, the unit above was occupied, and we never experienced any problems.We’ve spoken to management multiple times, but they’ve been completely unhelpful and have taken no meaningful action and even told us that we are making the noise up, inspite security having been to our apartment numerous times wittnessing the noise. 

I could send you a handful of articles that would give you the basics and you'd be fine.I have 14-doors in Detroit and 3 of them I've placed S8 tenants in.

Here's an article with additional FAQs on cost segregation studies that you may find helpful.

While doing that, rethink how to best invest and deploy your corpus.I saw this article and thought of your plight.