In this video tutorial, viewers learn how to set a guitar's intonation. Studying the intonation of the guitar is making sure the guitar is in tune. To check intonation, it is recommended to use a guitar tuner. The video provides step-by-step instructions for viewers to properly check and set the guitar's intonation. Users need to check each string for equal pitch. This will benefit those viewers who play guitar and need to learn how to intone their guitar.