Confirm with your CPA that any excess loss was reviewed for NOL calculation and properly carried forward.

Check with your lender and consult a tax professional to ensure proper structuring for interest deductions.

You will find many resources here on the forums and throughout the site as well.Personally, my short list of books to explore:Set For Life by @Scott TrenchRich Dad Poor Dad by Robert KiyosakiABCs of Real Estate Investing by Ken McElroyABCs of Buying Rental Property by Ken McElroyLoopholes of Real Estate by Garrett Sutton, EsqTax-Free Wealth by Tom Wheelwright, CPAThe Power of Zero by David McKnightREIT Investing for Beginners by Lawrence SmithWhat Would the Rockefellers Do?

Take ownership of your mistake and learn to do the proper due diligence recommended above😊

As others has shared, I am able to hook them up properly to avoid any issues with tenant installation.If a unit dies, and I do not want to replace it, I just terminate the addendum and remove them. 

. - Agreed, sounds like you don't have the time to properly vet candidates.

Would love to hear some feedback from BP community managing medium term rentals and or get pointed to some medium term strategy resources.

I recommend learning a bit on how to read the financials, but find yourself a great Accountant to help you analyze the financials and tax returns to make sure things make sense and are proper. 

I’ll try to answer some of your questionsonce a note has matured the note holder has the legal right to call the note due - with proper notification to the debtor.  

.- Find out how long the provider has been doing cost segregation studies and how many they have performed- Consider the resources available to the provider.