Developing a consistent Photoshop workflow is an important part of improving your landscape photography. I normally use Lightroom to convert from RAW, and then use several layers in Photoshop to create my final landscape photograph.
Download this free Photoshop action by clicking the link above. Run it in Photoshop and you will see that the following layers have been created:
1) Shadow/Highlight layer: Run the shadow/highlight tool on this layer to balance your exposure.
2) Curves: Drag the curve on this layer into a shallow S-curve to add a little contrast to your image.
3) Levels: Use this tool to adjust the brightness, white point and black point in your image. I recommend adjusting this layer last.
4) Hue/Saturation: Adjust the saturation of individual colour channels to taste.
5) Selective Colour: The most useful colour tool in Photoshop and the least well known. Experiment!
I use this action when processing most of my Northern Ireland landscape photographs. I hope you find it useful!