She does not have an on line mangement system though just sends a check each month with a little ledger of expenses.I have a client that runs a larger company and they do a nice job at least on all the deals I have done for them as a capital partner when I do the draws and look at my before and afters they do some really nice work in a timely fashion

Send a letter giving them your/pm's contact and a detailed explanation on how to pay the rent (Helpful with older residents if you are going from check to online billing.

I agree with the above that Quickbooks Online (QBO) will work for you.

I also did some investigating online and see the renter has a tendency not to hold down a job.I offered asking price (fair market) because it was the sellers bottom line and the fact there were already tenants renting.

Lots of material online.  

I think you are answering your own question here - if you can't find reviews or much info online then....

Pro: In addition to MLS access your brokerage might provide access to other resources such as detailed online assessment data not available free to the public. 

The address was submitted to their red book and now shows up online as official address when I try to ship items from Amazon or similar websites.

I keep reading different things online.

All your first set of questions can be answered by looking online or calling several local competitors.Your accounting questions though, show such a lack of basic knowledge that you probably shouldn't be doing this until you have more experience.