All of these chords can be shown in a chord chart. A guitar chord chart is a graphical representation of a rectangular box that shows you how to play each single chord. A comprehensive understanding of guitar chord charts is vital to any guitar player.
The elements of a chord chart are these: the six lines that run vertically represent the strings; the series of lines running across the string lines represent the frets; the crisscross of the string and fret lines represent the guitar fret board; the dots located on the fret board show which strings and frets to press; a double line at the right edge of the box represents the end of the neck; an “x” symbol on the string line means “dead string,” or “do not pluck this string”; an “o” symbol on the string line means “open string,” or the string is plucked but not fingered; numbers 1 to 4 on the string line corresponding to the dots specify which finger to press on that string. Number 1= the index, 2 = middle, 3=ring, and 4= the pinky; a line crossing two or more strings is called a “barre chord”, in which one finger presses several strings.
From this basic information, you can learn to form and play any guitar chord, and thus master guitar playing.