We rent out our previous home and bring in $600 a month on it after mortgage, taxes, and insurance, but she doesn't see it as an investment property and so it has been hard to continue investing without her support.

Find out if they are properly licensed and insured. 

In my opinion if one knows what they are doing and what documents are needed then go direct it seller.

Hello everyone,Bigger Pockets provided a lease agreement for AZ which has an option for the Tenant to include liability insurance in their renter's insurance.I'd like some advice to help me understand if I need to include a liability insurance amount and how to assess that amount for different properties.Thank you in advance!

For insurance reasons, she can't hire employees (yet), so she runs it 100% by herself. 

3) Do I make it mandatory to have me added as Additionaly Insured?

Did your contractor offer their own to insure work was completed?)

She communicates well and complied with my requests for documentation. 

Even having the MLS access to see disclosure documents and agent-only comments could sway you one way or another on moving forward.Finally - if you don't or can't service someone but want to refer them to another agent (in or out of state), you can get a referral fee back (negotiable % usually in the 20%-30% range) to help offset those fees.

Also, there is IRS publication 527 (p527) Residential Rental Property.Otherwise in short, your rent less your expenses (generally mortgage interest, insurance, taxes, repairs) and less depreciation is your profit/loss for federal purposes.