A guitar is a string instrument that typically has six strings and is played by strumming or plucking the strings with the fingers or a pick. Guitars are widely used in various music genres, including rock, pop, country, and classical. They can be acoustic, which means they produce sound through the vibration of the strings and the body of the instrument, or electric, which amplifies the sound through electronic pickups. Learning to play the guitar can be a rewarding experience, and it often serves as a gateway for musicians to express their creativity and passion.