Landscape photography can be tricky to post-process when you are first starting out. Many beginning landscape photographers think that they can go out and take stunning landscapes straight from the camera, when in reality many of the most stunning landscapes around today have all been adjusted and processed to give them that extra umph.
The video below gives some great tips for those of you looking to improve your landscape processing. The video specifically covers RAW processing and how to get the most out of your image during that process. Its interesting stuff if you are like me and are curious about better landscape processing techniques.
This next video gives some great tips on using layers, layer masks, and adjustment layers to improve your landscapes and really give your shots that extra impact.
Hopefully these will help you get a better feel for what can be done to a landscape to improve upon what you get straight out of your camera. It really does not take much work once you know what to do, but that is the hard part figuring out your personal style and how to make that come out in your shot. Good luck!