In fact, I would accept an entry level position with an investor as assistant in exchange for a small percentage and education.

Using this tool and data from Zillow, I looked at properties in three cities: Austin, TX; Cupertino, CA and Las Vegas, NV.

Most likely this person got their data from a multitude of websites, not just one.  

I just started doing Quickbooks effective 2014 and got some help from a bookkeeper to do the journal entries from the HUD1's to add the rental house assets I purchased this year.  

If you go to citi-data and view the demographics it reads something like: % of renters: 62% Median house value: $89,200Median property tax: $1,097...etcWhat this doesn't tell you is the west side is more family owned homes that can run upwards of $1million.

My entry into RE was mortgages.

I knew I wanted entry level or starter homes near good transport links, couldn't be over 10 years old because we didn't want to do repairs at a distance, at a certain price range, in a certain type of neighborhood, and must cash flow at a defined price-to-income ratio.

How does the service entry wire look (wire from meter to panel)? 

I would look outside ( Longmont, Fort Collins, Denver) for your first flip due to the lower entry point

Redfin essentially copy paste the MLS data.