My opinion page addressing inquiries concerning clawhammer technique.
The circle is a tool to help demystify chord theory. It can do so many things that I've started to think of it as a music theory slide rule! It can tell you the number of sharps and flats in any key and what notes to sharp or flat in those keys, but what the circle excels at is showing chord relationships; it shows the common chords in any key (I, IV, V, VIm, etc.).
When you download the circle of fifths page from my instruction section, make sure you also download the page dealing with chord relationships. It will make the use of the circle more clear. You can find both on my clawhammer tab page.
Thanks... Mike