Step 1: Familiarize Yourself with the Guitar you are Working with
Saddle: where the string rests and is held in place
Bridge: string is positioned and sits in its own slot to ensure adequate spacing among all the strings
Electric pickups: magnetic pickups that translate the strings vibration into the correct sound
Peg and tuner: At the head of the guitar, you will find the pegs and the tuners. The tuners are the six knobs on the ends of the pegs that, when turned, tighten or loosen the string. Take a moment to familiarize yourself with which pegs and tuners go with which strings.
Step 2: Remove the Broken String
In order to remove the string, first you must pull the string out through the bottom of the saddle. You will notice an eyelet at the end of the string which will help you grasp the string when removing it.