Investors & landlords

I found this site that seems to walk through the form. I have similar problem and I sold the property last year so I have been trying to figure out options. I have no experience with this so it could be wrong.
<a rel="nofollow" target="_blank" href="https://www.natptax.com/TaxKnowledgeCenter/FederalTaxInformation/whitepapers/summaries/Documents/For...>