I just bought my first dSLR a week ago (a D90) so I'm trying to figure out how to take the kind of pictures I like. It is certainly not easy, way too many variables to control! I really like landscape pictures. Consider this amazing picture published in the NY Times:
I know that the hardest part is probably composition, but lets assume you are there and see this picture in your mind. Then, how would you set your camera to take this picture (exposure/aperture/iso/...)? Which lens do you think it was used?