I've been giving lessons for both getting in tune with camera equipment as well as the perhaps more involved subject of post-processing. I currently use Lightroom and Photoshop, and I like to differentiate the use case, where Lightroom is used more for the creative aspect of post-visualization: sifting through images to refine vision. Photoshop is of course a big subject. I've been using it since 1994 or 1995. My knowledge of Photoshop is deep, and I will convey as much as you want to know. The lessons work best if you are local in Vermont or New Hampshire.
I like to teach in person, one on one, and now in the pandemic we would have to do it at a distance. Let me know if you'd like to try.