So what it does for me is basically barely noticably adjusting the saturation/contrast values, fixing the horizon and applying lense correction.
So what it does for me is basically barely noticably adjusting the saturation/contrast values, fixing the horizon and applying lense correction.
It mostly sticks to standard industrial and scientific definitions instead of marketable names, and contains very little "magic" that is common to commercial photography software (such as saturation intentionally not being actual saturation, hidden curves, and so on). So you can use any good book on photography/videography and color science, and directly apply it to most of the stuff it has.
Additionally, the developers spend a lot of their time explaining their reasoning and writing about the theory in general, for example:
https://www.youtube.com/user/s7habo/videos - this channel is consistently great for both basic and non-obvious things
https://discuss.pixls.us/c/software/darktable/19 - main darktable forums, has very good discussions and explanations
https://eng.aurelienpierre.com/ Dr. Rant of darktable. Primarily technical stuff.
For a simpler interface that gets me (a naive user) half-way decent results pretty quickly, I'll drop back to LightZone. Whole bunch of ready-made presets that combine primitives (sharpness, contrast, saturation, curves etc), and easy to save new presets once you find a combination you like.
It's over hyped. Yeah, it's cool and all but anything else would do the same thing. The only thing that I actually found is better in Lightroom is the AI detection features. Same can go with Photoshop and paint.net (or gimp if you're into that kinda thing.)
You can't change the aperture after the image has been captured. I don't think you're the intended audience for darktable. Give https://filmulator.org/ a try!