Can Someone Give Me an Idiot's Guide to Setting Up a Photon Mono X?  

RE: Can Someone Give Me an Idiot's Guide to Setting Up a Photon Mono X?

You want to use UVtools.  

https://github.com/sn4k3/UVtools

RE:

@wingnut-2
Add a Prusa SL1 to your list of printers in PrusaSlicer using "Configuration - Configuration Wizard" and finish the wizard
In "Printer settings" change the "Max print height", "Display width" and "Display height"
Save the printer settings under a new name

Choose the new printer created above and insert your model
Hollow and add supports
Use "File - Export - Export plate as STL including supports" to export a hollowed and supported version of your model
Open Photon Workshop and import the newly created hollowed and supported model
Create gcode and put it on the stick to print

Use this Excel file as starting point for your settings.
Experiment a little using the included "R_E_R_F.pwmx" or UVTools as @cwbullet suggested to find the correct exposure
Know that you can change the starting exposure of the "R_E_R_F.pwmx" by changing settings on the printer, use the cogwheel after the print has started.

Enjoy your Mono X !