Then read the How to Invest in Real Estate: The Ultimate Beginner's Guide to Getting Started by @Brandon Turner which should have the rules of thumb in there (free pdf download if you google it.

Both working from home was causing some issues for my wife's connectivity and I had a lot of large downloads I needed to do for work.

You can't beat getting leads while driving around and learning the area, download an app like LandGlide or similar to get information while you drive, then skip trace and cold call owners.

In Wisconsin you can just download the sales contracts and fill them out, any title company will close the deal for you. 

This will allow you to easily determine at the end of the year what is business and what is personal.I would also download an app to keep track of your miles that you drive for business related purposes.This will all be handy when you work with your accountant.

I heard the Director, Jim Griffin, on a podcast with The Real Estate Guys from March 21, 2021 and downloaded his Note Investing PDF which was very informative.

It can be as simple as one you download from the web and tweak on your own. 

In the files section there are property analysis spreadsheets for download.

Just out of curiosity, I did download the forms that BP offers for each state when it comes to rentals. 

One thing that would be really great would be if I could use Google Earth as a one stop shop, where I can download an overlay from crimegrade.org to see neighborhood crime rates, I could import MLS information (even just from Zillow or Redfin) to populate the home currently for sale, and recently sold, and also be able to overly FEMA flood zone maps.