If so, visit the property and see of the heat is on.

Not a book, but Bill Faeth has a lot of free, good content on his site and YouTube videos.

I live in the US full-time and visit a couple times a year. 

If you are going to invest in class C I strongly recommend you physically go visit the property and the area with your own two eyes.

This is a real estate investment forum, so you won’t find many/any people on this site who deploy that strategy.

There was a recent webinar, bottom line, it looks like Darryl Heller sold off many of the ATMs, didn't pay the people who put the cash in them, didn't pay the stores that have them on site, isn't providing information to David Zook's team that the court has ordered and is racking up something like $50k+ a day for not doing so...it is a complete mess and seems like there are only a fraction of the ATMs that might still be producing money but the company hired by Zook to get their hands around all of this is running into many roadblocks because Heller's team isn't providing info. 

I browsed sites today for an upcoming trip and their inventory is expanding.

FWIW, where you are buying is NOT a place that tourists come to visit.  

A  visit to the area, boots on the ground of a similar mindset, , property manager, realtor, contractors.

Refer to the frequently asked questions on the third slide. https://www.hud.gov/sites/dfiles/SFH/documents/MO_203k_Progr...