Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

Realtors listing is a great way to market it, Facebook is also an underutilized method.

Check out this BP article about how they come into play with the BRRRR method.

Obviously if you’ve done this before you likely have a method you prefer for dealing with these types of things.

You can take a deep look at the deals and get an idea of the kind of variety you'll see and come up with your own due diligence method (that meets your unique situation).

You can sell on financial method because there is such short demand there is all but no comp's to use for comp method, and if selling as turn-key, yup, financial method will be your friend for sure. 

The straightforward method is to do everything yourself, as in my example above.

If you're looking for a great way to find off-market properties with less competition is by using a method called Driving for Dollars.

@Abigail King I mean, I wouldn't classify it as "creative financing" as much but my favorite strategy has been the BRRRR Method for many years.  

I've done extensive research into the options and a lot of the paid options seem to focus on teaching specific investment methods.