How do chords work on guitar and how can I understand and play them effectively?

Chords on a guitar are made up of multiple notes played together to create a harmonious sound. To understand and play them effectively, you need to learn the finger positions for different chords and practice transitioning between them smoothly. Using chord charts and tutorials can help you learn the shapes and build muscle memory for playing chords accurately. Regular practice and patience are key to mastering chord changes on the guitar.