Douglas Stemke , Mar 30, 2013; 02:48 p.m.
In the days of film photography I would have highly recommended John Shaw's Landscape book. I haven't read it in a while, but likely it is dated.
I cannot comment on the post processing aspects, but critically evaluating a good (or bad) image will give you pointers on what works and what doesn't. Is the light in the right place? Are there 'too many elements'? Does the composition work?
Personally from a technical side landscapes are not that difficult to understand especially since one tends to go for as much depth of view as possible and therefore sharpness is *usually* a jey ingredient. Also full frame bodies are usually the way to go .