If so and they are taking the property as collateral this sounds like a standard mortgage situation. 

Curious, what is the standard length of time for these types of services?

He's a month to month tenant and with a few exceptions the standard in VT is 30 days notice to vacate due to sale.  

But that is a really generic question, and can't be answered without writing a book.

It's better to learn from someone's experience then from books. 

I’ve listened to many podcast episodes of BP, I’ve read just a handful of different books on the subject, and most recently started an online course to get my real estate license.

I bought books on personal finance and the stock market, and on a whim I bought one of Brandon Turner's books on rental property investing, which led me here to biggerpockets.

I am going to continue to read real estate and investing books, read forums on Bigger Pockets, and listen to the podcasts for the rest of this year into 2019 to arm myself with knowledge to make the process easier come time to take action. 

Set your standards higher.

As I read through Alex Goldovsky's book Bulletproof Title Due Diligence (great book btw) and some of the potential title issues come to light, I'm wondering what jurisdictions you experienced investors have blacklisted and will not invest in.