A little introduction in chords:

Chords are made up from various notes on the guitar. Before I introduce you to some basic guitar chords, let me use a metaphor to first describe what chords are.

When you read, as you are doing now, you see a collection of letters from the alphabet put together to make words. Compare this to musical notes and chords. The musical notes are the metaphorical equivalent of the letters, those notes are combined to make chords, the metaphorical equivalent of words. Of course the correct notes need to be combined in order to make those chords, just as the correct letters are needed to form the word.

Or what often strikes everybody's imagination  is that you can consider yourself a painter who uses his color palette in the same way as a musician uses his notes, or musical expressions.