Before you do anything download your local landlord/tenant ordinance, or state statute to see what your rights are as a landlord.

If not, download the "meetup" app and search for some.

Biggest concern with any of the spreadsheets you download off the internet: nobody shows you monthly returns.

Here is a report from FEMA and the US Fire Administration that details the fire/explosion danger which you can cite to support your PM. https://www.usfa.fema.gov/downloads/pdf/publications/electronic_cigarettes.pdf

You apparently can download your leads to your own database so you don't lose them but do they lose your contact info?  

That's when I downloaded Audible and my first audiobook purchase, Rich Dad Poor Dad. 

Before you do anything else, download and read your local landlord tenant regulations.

It finally got to a point where I said "I know I need to upgrade but this thing wont break" I did upgrade but still use my older Macbook to download music because they just dont get viruses.

The correct next step is to download your local landlord/tenant regulations and read them front to back.

None of my browsers worked and I ended up downloading the BP app on my phone.