Article: Lay down a towel or soft cloth on your table or counter to protect your guitar's body from scratches. If you have a headstand, you can use that to hold the neck for added stability. Set up your work station by laying out your tools. You'll need Allen wrenches for the nut plates and saddle, wire cutters, and a string winder. You may also want to gather cleaning supplies so you can clean your guitar after removing the old string. The locking nut plates hold the strings in place. Turn your Allen wrench slowly to loosen the plates before removing them. Put the plates in a safe place so you don't lose them. Your guitar likely came with a set of Allen wrenches designed specifically for this use. If not, you can find a set at most music or guitar shops, or you can order one online. Turn the tuning peg slowly to release tension in the string before taking it out. If you need to remove multiple strings, only remove and replace one string at a time. If you take all of them off, your bridge may not have the same tension when you replace them, and you'll have a hard time tuning your guitar.  A string winder will make this process faster and smoother. If you don't have a string winder, you can turn the tuning peg with your fingers. If the string is broken, hold the broken end as you turn the tuning peg. This will unwind the top of the string and keep the broken end from getting tangled in the other strings. When you've unwound the string completely, carefully pull the string to remove it completely from the tuning peg. Take care not to poke yourself with the sharp end of the string. If the string isn't broken, you may want to stick the sharp end in an eraser or wrap some tape around it. That way you won't have to worry about it poking or scratching you as you work. Don't loosen all the saddles, only the one that corresponds to the string you want to remove. There is a small metal block in the bridge that keeps the string tight. Keep an eye out for it as you loosen the saddle.  If the block does come out, put it somewhere safe so you don't lose it. You'll have to put it back in when you replace the string. It can help to count the number of turns you made with the Allen wrench to loosen the bridge. You can use that number when you tighten it back up to avoid over-tightening it. Wrap the string into a neat coil. If the string was broken, you'll have 2 coils of string. Twist the sharp ends around and dispose of the string safely. You may want to wrap tape around the sharp ends to hold the coil together and keep the sharp points from coming loose. While a string is off, take the opportunity to clean the fretboard beneath it. Use a soft, lint-free cloth to gently rub the cleaner into the wood. Avoid getting the cleaner on any of the other strings. You can also polish the frets using the same oil soap. Once you're done cleaning, wipe away any excess with a dry paper towel.

What is a summary?
Place your guitar on a flat, clean surface. Take off the locking nut plates using an Allen wrench. Unwind the string at the tuning peg. Pull the string out of the peg. Loosen the saddle with an Allen wrench. Pull the other end of the string out of the bridge. Clean your fretboard with an oil soap or fretboard cleaner.