3) Be Wide
Whenever you’re shooting landscapes, use a wide-angle lens (I just purchased an Olympus M.Zuiko Digital ED 7-14mm F/2.8 Pro Lens and love it!) to capture as much of the scene as possible as well as the scale. Having an object in the forefront of the frame and create a strong depth-of-field and provide the viewer with a sense of scale. We often see this effect when shooting food at a close range as well.
4) Be Friendly
If you’re photographing your family and friends, especially in areas of high tourist interest, try to get to the locations either early in the day or late at night. These are times when most locations will have fewer tourists and there will be fewer people polluting your photographs.