But I have issues with the cable internet at my home, so it makes more sense for me to go the flash drive route then thru an SAAS like Iron Mountain or Dropbox.

Some internet searching gave me rent increases of 3% (national average) annually and 7% for property value (in Florida). 

Some big internet companies are offering a lower rate but with way more closing costs. 

I might be able to entirely learn the thing on my own with the power of the internet.

Just goes to show, the internet only knows so much.

So I've looked all around the internet and can't seem to find an Agreement of Sale aka purchase agreement.

I took an opportunity and read reviews on the internet.

I do not allow photos of my properties or copies of the lease agreement to be posted on the internet without my written permission.   

If you know the exact property, did you get the average costs for heating/cooling, internet, etc etc.Like @John Underwood said, take all the info and plug it into a spreadsheet to get the best idea of what to expect.

There are free calculators for mortgage calculations on the internet for your laptop/computer and your phone.