After my P.M. costs I collect $940 or so/month. 

Do you have a preferred type of property and price range you're looking for in general (knowing the costs can be different based on they market)?

For me the area I was concerned with was estimating costs.

Is there an easy way to divide the basement up? Each side of the duplex has access to the basement but below everything is connected together and I want to make sure no side has access to each other. The way I can ima...

EDUCATE YOURSELF - yes, it will take time, but will lead to a selection that better meets your expectations & avoids potentially costly surprises!

For most investors, to provide true separation would be cost prohibitive (between $10k-$15k). 

A few other methods cost some money but is usually just throwing away small amounts at a time. 

If any damage arises from her negligence she will be getting the bills for damages, plus costs of collecting which you bill as well as your attorney in addition to the termination of her lease.

Cash flow has been hampered by an increase in cost of ownership recently, specifically insurance. 

I had few options so our cost doubled.