and is there a particular document I can ask for from the current owners? 

I know my crew can make this place look totally different and I was right.

However, they approach financial health from different angles.The 50% Rule is a quick estimate that suggests operating expenses (excluding mortgage principal and interest) will roughly equal 50% of the property's gross income.The DSCR is a more precise calculation (Net Operating Income / Total Debt Service) that determines if a property generates enough income to cover its debt obligations.Deal example:- Class C middle class neighborhood- 4bd / 2ba single family house- ARV: 190k- Purchase: 105k- Rehab: 35k- Market rent: $1,400-1,525- Section 8: $1,475- Property manager: 10%- Taxes: 125 month- Insurance $1250 yr- HOA: $55 month- purchased and rehabbed with all cash.

Goal would be to acquire 20 rentals by the age of retirement, with some already starting to be paid off.I am in the same boat as you, and I focus on safe appreciation all day (small cash flow for safety and then focused on markets on that appreciate). 

Tax law is complex and is actually a small part of the CPA exam. 

I am new in BP, and I am looking to understand where I start with learning about REI.I currently live in New York which it's not a good place to start investing.i know the difference between STR,MTR,LTR....

My property manager says there was no indication that the tenants are at fault.

I also recommend you start looking for a professional property manager, at least until you educate yourself enough to run this solo.

We have 16 units and I get maybe one noise complaint a year because everyone is aware and tries to be respectful. 

I am trying to get my RE License and I am currently enrolled in AYPO Real estate course.