After a bit of research I discovered it had a first mortgage on it and several back tax liens, but the owner still owned it after 7 years.

I was very excited when I discovered the DST concept and would be happy to discuss that with anyone who reaches out. 

I was just wondering if there was a specific strategy or method that I should employ to be able to discover the multi family homes for sale.

Unfortunately this surfaced on Monday,  I discovered it a 3am Tuesday due to some differences I was experiencing with her communicating professionally and also giving us false information such as Realty Trac is only for Realtors, which is the site we use to download our auction and foreclosure leads.Because she knows I am from Chicago, she said my family was giving me the info to stand in the way of my success. 

That brings me to wholesales, I understand the key components of the game, is wholesaling something I should look into more in regard to a source of income right now?

The main components are cash flow, mortgage reduction and appreciation over [your expected holding period]. 

Minor/Major components for R22 systems are going to increasingly become hard to come by.

Some things to consider when selling property and doing a seller finance and considering the tax aspects.If your gain is not that much - you may prefer just receiving the full payment in the year of sale and not doing a seller financed deal.If the gain is a lot - you may prefer to spread the gain over several years.You also have an interest component that you can charge the buyer which you may find beneficial.Good luck on the sale!

I then went into my Zillow landlord account to respond to another email request for information and discovered a new message. 

During inspections the buyer discovered a gas leak and backed out.