Can someone here please recommend a book or literature on photo editing/post production?
Mind you, I am not looking for lessons on how to use Photoshop or any kind of software. I can learn to use software by myself, there are manuals for that. What I'm looking for are basic and advanced notions on WHAT to do with a photo and WHY. For example, I would like to have a clue on how to edit RAW files. I do that, but I often don't really know what I'm doing. Or sometimes I apply some filter that improves the photo, but I don't really understand how. If I were to do the same by myself, I wouldn't know where to start, and it's not because I can't use the software, it's because I know very little about light, contrast and color adjustment. One of the programs I like to use is LightZone, but it's full of buttons, sliders and tweaks that I don't understand. I can tweak them at random until I get some kind of result I like, but the big annoyance for me is that I don't know what I am doing.
Books and web pages on that will be very welcome.