How the circle of fifths is described in my understanding
well, indeed it's easier for us to understand the circle of fifth than the circle of fourths in guitar learning. There are two reason for this. first, we can always find the fifth note on the guitar fret board, simply by pick the string right above the root note (for the root note on the 3th, 4th, 5th string and the 1st string, the fifth note is right above it; for the 2nd string, the fifth note is half-note-down above). it's visually known by our eyes and our fingers can touch it right away. the second reason and the real reason is that the circle of fifth is obtained from the notes order linearly. there is something that we called tetrachord. the wikipedia definition: a tetrachord is a series of three smaller intervals that span the interval of a perfect fourth, a 4:3 frequency proportion. the circle of fifth is obtained from diatonic tetrachord (this is sh!t, there are too many difficult words for beginner guitarist like me to understand!). I'll try to explain...