Denver Creative Housing, Denver Sublets, Roomies, Roommates, and so on, there are a few good ones)Also, I use Roomies as well because it is a site specific to finding roommate tenants, and there is a huge demand for it as well, so it is a great alternative to fill vacancies for houses if your owners are open to it and you price it correctly. 

I'll take any and all advice any of you have, but the two things I'm looking for specifically are: what sites, services, and/or software you use and recommend for sceening and managing tenants? 

If anyone on this site knows of a state like that please tell me.

The property alone is worth a million but is generating an estimated $250k/ yr with the ability to add 3 units on site and acquire an additional 13 acres.

Any tips would be appreciated

We also have infrastructure in place at a build site for a 3rd unit on property.

You will want to insure a number of things as an MTR landlord: your interest in the building itself (owner's policy), your contents (owner's policy), your interests if a renter or guest is hurt on-site (landlord policy), and possibly flood, wind, lost-income policies.

Not a book, but Bill Faeth has a lot of free, good content on his site and YouTube videos.

Tips? 

Let me know if you’d like more tips—happy to connect!