Modern cameras are truly wonderful devices, every time a new one comes out it’s seems to be packed with more and more cool stuff to temp you into parting with your cash. Of course many of these features can be quite useful in certain situations but for the most part a good proportion of functions will rarely be used. This is very true for the landscape photographer. Sturdy build, good glass, a decent viewfinder, a reliable light meter and the ability to alter the aperture and shutter speed separately is all it needs to do. The question of resolution/pixel count really comes down to what it is that you’re going to be doing with your images, and if you never print larger than A4, a 6MP DSLR will do the job just fine. 12MP seems to be a good amount for the majority of folks but even the lower end cameras are now offering more resolution than this; cool if you want huge prints or to aggressively crop your images, but most of us just won’t utilize the full resolution of our cameras.
So, your camera will come with a number of exposure modes; Program, Shutter priority, aperture priority, Auto, Manual and in addition to this there will be a selection of scene modes to choose from. I only ever use two of these modes; Aperture priority and Manual. Aperture priority is great in situations where you have to work fast; you get to choose the aperture and thus the depth of field, and the camera selects an appropriate shutter speed to get a good exposure, or at least what it deems to be a good exposure.