C Major Triads
Here is a diagram showing C Major triads on the E, B and G strings of the guitar.
A triad is a three note chord.
All of these triads consist of the C, E, and G notes.
As you move up the guitar fretboard you are playing different inversions of the C-E-G triads.
Notice the repeating patterns.
You should strive to move up the guitar neck fluidly through the triad patterns.
Learning triads is a wonderful way to become familiar with the fretboard and the chord structures within.