I get that.I have been going to several of the usual websites where notes are available. 

The marketplace would be a great part of the website for you to search for deals if you're still looking.

It shows the zoning on the city website to beRMF-22 | RESIDENTIAL MULTI-FAMILY 22: Established to provide opportunities for high-density multi-family residential uses with a maximum density of 22 units per acre.

Your best source of cash buyers at first will be other tk providers so if you look on their websites to get an idea of areas you will then know what zip codes to target.  

I have mixed opinions about the county appraiser's value listed on their website because the market value of a property seems too different than what some investors are looking to buy/sell that property for.What are your preferred methods for finding the market value of a property?

I signed up for this website to gain more knowledge about real estate investing as I am a young professional looking to figure out a way to have passive income later on in my life.

You can go on Denver's website and type in your address to find out what you're zoned for.  

I downloaded the template for one from the SBA SCORE's website.  

Go to their web site and search for a Property Management company.

If you have a web site, point them to that so they can read it themselves and avoid any miscommunication.