Using the Ernie Ball FlexTune is a breeze. First, clip it onto your instrument. Then, choose the right tuning mode based on your instrument, like guitar, bass, ukulele, or violin. You can also switch between the clip and microphone sensors as needed. To get the best view of the display, use the 360-degree pivot arm to position it at a comfortable angle. When not in use, keep it in a dry and safe place. Avoid dropping it or exposing it to extreme temperatures. If the screen gets dirty, gently wipe it with a soft cloth. This will help keep your FlexTune working well for a long time.