Inky Impression help needed - slideshow?

I’m a bit new to python but I was able to get the Inky Impression working with my raspberry PI 3+ but I have a few questions if anyone has time. I was able to swap the rotation to Portrait so I can display images in that orientation and dimensions. Now I would just like to have a simple script running that will cycle through the 20 or so jpegs I have and display them once every hour or something like that.

I have tried several code samples out there but several different folks but just cannot get anything to work as I want. This seems kinda simple, does anyone have something close?