What are the different ways to use capo keys on a guitar to change the pitch of a song?

A capo is a device used on a guitar to change the pitch of a song. It works by clamping down on the strings at a specific fret, effectively raising the pitch of the guitar. Different ways to use a capo include placing it on different frets to change the key of a song, allowing you to play in different pitches without changing the chord shapes.