Using the Shure PG185 lavalier microphone is easy. First, connect it to your audio device via the TA4F connector. Place the microphone close to the sound source, like near your mouth if you're speaking. When using it, avoid touching the microphone directly as it can cause unwanted noise. After use, gently clean the microphone with a soft cloth. Store it in a dry and safe place to keep it in good condition for a long time.