Obtain a working knowledge of the local rental market. 

I would recommend looking for local FB investor groups, most areas have them!

Unfortunately, I’ve run into a major issue: I received a Stop Work Notice on my property in Covington, GA, because I didn’t have the proper permits for the renovations.I want to resolve this as quickly and smoothly as possible without jeopardizing the project.Can anyone offer advice or share their experience with:1.How to address the Stop Work Notice with the local authorities?

Call some local HVAC/Mechanical companies and ask what the average cost would be for this upgrade! 

20% down, mortgaged the rest through a local bank How did you add value to the deal?

I had the owner of my local branch doing mine.

Listen to as many podcasts as you can and attend all of your local meetups to connect with other investors.

SW MN is hard to find Landlord Insurance, all local insurance companies say thy quote you landlord insurance, but they realy quote you general home owners insurance.

Attend local meetups, analyze at least five deals per week, and connect with investor-friendly agents to position yourself for success.

In order to network with wholesalers and lenders the best way to go about it will be to attend the local REIA like The Greater Houston REIA and also joining the local investors facebook groups.