Summarize this article in one sentence.
This is the part of your guitar where the strings are. A fretboard, or fingerboard, should only be cleaned once or twice a year, so that the natural oils and moisture on your guitar that are picked up through the contact with your fingers remain on the guitar. Using your cloth, lightly dampen it with water or distilled vinegar, and gently wipe away the dirt or grime you find on your fretboard. When cleaning your guitar, make sure you wring out your damp cloth as much as possible -- you don't want to oversaturate your guitar with water or cleaning products. For those really dirty spots on your fretboard, you can use a piece of extra fine #000 or #0000 steel wool to scrub them out. Because steel wool can get caught to the magnets of your pickups, you might want to cover up your pickups if you choose to use steel wool. Moving down the length of your guitar, clean the body of your guitar -- the front, back, and sides -- with the same damp cloth. Make sure you rinse out the cloth so that you don't just spread the dirt to other areas of your guitar. Move the cloth in circular motions across the body of your guitar. As you clean your guitar you may notice some spots that don't come off just by wiping them with the cloth. Fingerprints, smudges, or dirtier spots may need a little bit of moisture, so "huff" warm breath on your guitar, just as you would if you were cleaning a window. Then, wipe with the damp cloth. If this still isn't enough you can use a small amount of mild detergent with water. After you have cleaned these spots, buff with a dry cloth to remove streaks. The bridge is located on the body of the guitar, below the sound hole, and it supports the strings of your guitar. To clean the bridge of your guitar, use the same method as the fretboard, dampening a cloth and wiping down the bridge to remove dust, dirt, and grime. For the difficult spots, you can use a toothbrush or pipe cleaner to gently scrub away the dirt. These are the keys at the top of your guitar neck, on the headstock of your guitar. To clean these keys you can spray a dry cloth with glass cleaner and polish each key to bring back the shine. These are usually located on an electric guitar, on the body of the guitar in place of the sound hole. If your pickups look a little dirty you can clean them up with a damp cloth, but if you spot rust on your pick ups, carefully remove them from your guitar. Once you have unscrewed your pickups (using an Allen wrench is an easy way to do this), clean them with a rust-dissolving agent. You can also remove rust spots using a white pencil eraser or a cotton ball with a small amount of lighter fluid. Once you have cleaned your pickups, screw them back onto your guitar and wipe dry with a clean cloth. Some guitar experts suggest not to polish your guitar frequently, as the polish can build up and while it looks nice cosmetically, it may dampen the sound of your guitar. If you are going to polish your guitar, use a polish that contains pure carnauba wax and no solvents or petroleum products. Spray your polish on a cloth and gently wipe down your guitar. If your guitar has a satin finish, do not polish or buff it. Buffing a satin finish will cause it to look blotchy. You should also avoid polishing vintage guitars. Follow the above directions for how to protect your vintage guitars.
Clean the fretboard and neck. Clean the body of your guitar. Clean your bridge as you would the fretboard. Wipe down the tuning keys. Polish your pickups. Polish your finish.