I include every cent it costs me to acquire/market a property when computing my bottom line.

I was thinking of using a digital spreadsheet, and uploading it to a dropbox account (or something similar) so I can access it anywhere or in case my computer/laptop goes down. 

Since then if I am in my car driving, doing work on the computer, etc., I have the BiggerPockets podcast on trying to soak up as much knowledge as possible.

Turn your computer off.

I am glad you're on board. i am fairly new to bp and have similar goals and aspirations as you do. i am studying every single day to find out what it is that i have to do to free my self from trading my time for wages. i am 25 and broke into my career as a computer services technician for the city of New York almost 3 years ago. 

But just to be clear I didn't omit the interest because I couldn't compute it, it just completely escaped me while I was thinking of what to offer the seller and the terms. 

While you can do research on what states have estate tax and how they compute it you have to rely on an attorney in the state in which the property is LOCATED to advise you.   

Just thought I'd pop in and say hi :) Im a professional computer geek, musician and general net nerd :)

As for the files, try downloading them on a computer because they are zipped files.

Use your down payment and loan terms to compute how much cash you need to invest and your payment.