Cleaning your camera, including the sensor and lenses, is something you need to do frequently. Fortunately, with the right products that is very easy and safe.
When you change lenses dust will enter the camera and if you don't clean your camera frequently, it will get stuck on your sensor and be visible on all of your photos. An air blower combined with a sensor brush will get your sensor clean in seconds and without any risk of damaging your camera. Finger printers and other smudges are things you will want to avoid as well. You can easily remove these with a lens pen.
The following products were specially developed to clean camera equipment: