How to safely clean my Nikon D60?

It's a few years old and in great condition but there's some mud on the outside and I wasn't sure what would be safe to use to clean it off. There's a smudge on the lens as well that cloth won't get off. Could I send it in to get cleaned if nothing else?

Follow the instructions in the manual.

I clean mud of my nikon with a damp cloth. Lenses can be cleaned with a special cleaning fluid, check with an optician or a photography store for a cleaning product suitable for coated optics.

Some Nikon cameras, such as the D60, D300 and D5000, have built-in dust cleaning abilities. Run the dust-cleaning function once after every use to keep your camera in top working condition.

If you have been using your Nikon camera for a while, you may start to see some spots on your images. These spots are almost always the result of dust getting into your camera body and landing on the sensor in your camera. Since there's no external way to remove dust from your sensors, in order to clean your Nikon, you will have to get under the lens. It might seem risky, but if you are cautious there's no reason you can't clean your camera yourself.

1. Take the lens off your Nikon camera. Once the lens is removed, you will be able to see the sensor inside the body of the camera.

2. Blow away loose dust with an air bulb. Using an air bulb creates a less powerful gust than using canned air and will be gentler on your sensor.

3. Use a sensor brush to dust off stubborn dust particles. Sensor brushes are made with very soft bristles to prevent damage to the sensor. Clean the brush after each dusting of the sensor. Canned air will safely remove particles from the sensor brush.

4. Swab the sensor. Sensor swabs are fabric covered and made to clean camera sensors without scratching. They must be used with a sensor-cleaning solution, such as Dust Aid. Dip the swab into the solution so that it is saturated but not dripping and use the swab to gently scrub away dirt and debris from the sensor's surface. Pre-moistened sensor swabs are also available if you prefer an all-in-one cleaning device.

5. Put the lens back on your Nikon and take a test photo. You should photograph something blank, such as a solid-colored wall. Your photo should be free of any unnatural specks. If there are dots on your photo, all of the debris did not get properly removed. Give the camera a second cleaning to remove any residual debris.

Mud on camera: a microfiber towel with a bit of rubbing alcohol works great!

Lens - Microfiber lens cloth and a bit of breath.
Also, look for a Lenspen. Most camera shops sell them. They are fantastic!