When photographing landscapes it really helps to create a sense of depth, in other words, make the viewer feel like they are there, with you at that wonderful vista, or magical spot.
Use a wide-angle lens for a panoramic view , like the 17-40 mm L Series lens and a very small aperture of f/11 or smaller (down to f16, or even f22) to keep the foreground and background sharp. Super wide angle lenses can distort the image, so I would recommend not going under 17mm, but similarly if you want to get as much of the vista in then don't go over 35-40mm either.
Placing an object or person in the foreground helps give a sense of scale and emphasizes how far away the distance is. If you are going to include someone in the shot then please try and avoid the cheesy 'grinning into the camera' shot. It won't take long for people to get bored if all your shots have you standing in front of all those great spots, with the same goofy grin on your face, right smack dab in the middle of the scenery.
Use a tripod if possible, as a small aperture usually requires a slower shutter speed; the rule of thumb would be to NOT shoot hand held under 1/100 sec. Don't have a tripod, then put your camera on something firm and shoot from that.
Tripods are also going to be VERY handy if you want to shoot a panorama series, because that way you could take 3-4 shots and stitch them together in post production to give you a really spectacularly wide shot.
Above all else get out there and have fun :)