Capo Placement
The Capo can be placed on any fret of the guitar up to the 12th fret. It is extremely important that the capo is placed parallel to the frets to ensure proper tuning stability across the fretboard. An improperly placed capo can cause tuning issues and out of tune chords when playing.
It is also important to place the capo slightly behind the fret, rather than in the middle of the fret or directly on the fret. Again, this is to ensure tuning stability, as well as to allow proper hand placement when playing chords with the capo attached. You can see from the picture below the correct placement of the capo for ideal tuning stability and playing comfort.
A capo on the 2nd fret of the guitar. Note the capo is placed parallel to the frets, and slightly behind the second fret.
Tuning with the Capo
As the capo is applying pressure to the fretboard, there can be tuning issues when applying the capo. It is highly recommended that you tune the guitar with the capo attached, rather than before applying the capo. This will ensure that your guitar stays in tune. You should always re-tune the capo when changing capo locations to make sure the tuning of the guitar has not shifted between capo changes.

