Im on the beach while my guys are swinging the hammer, what do I care how much work.

Listen to podcasts, read/listen to books, follow some of the main STR industry operators on social media, go to conferences, network with those in the STR industry, and make connections with other STR operators in your area.

Start by reading the Ultimate Real Estate Investing Guide: https://www.biggerpockets.com/guides/ultimate-real-estate-investing-guide/introduction2.

Not sure what your goal is but before you start messing with homeowners in default (regardless of what stage), you might want to read up on the foreclosure laws in the state you are trying to do business in.

A good real estate attorney can take care of the paperwork, that's maybe 10% of the value you get from a good agent (it could be 50% from a bad agent, the other 50% is opening the door lol).The value a good agent brings comes from experience.

I will need to read up on Montana law for this, but my assumption is I don't need to give 30-days notice if the tenant breeched the contract making it void due to their breaking the agreement by interfering with the quiet enjoyment of neighboring tenants/ property owners. 

Since the OP obviously doesn't care, I regret chiming in on here at all.  

Not saying that is the case here, but just be careful to anyone reading this.Also have you posted it here on BP classified?

I'm unsure what the right path is, but I've been reading & watching podcasts about investing in owner-occupied, single family properties.

It was highly recommended on a BP thread many years ago.I don't do subject-to's, but just be careful.