Extended Chords - What they are and where they come from.
Guitar Lesson by Kirk Lorange
As well as putting together the guitar lessons on this site, I am also the author of PlaneTalk - The Truly Totally Different Guitar Instruction Package, which teaches a mindset, a way of thinking about music and a way of tracking it all on the guitar fretboard. Yes, there IS a constant down there in the maze of strings and fret wire, a landmark that points to everything at all times. I call it The Easiest Yet Most Powerful Guitar Lesson You Will Ever Learn and many testimonials at my site will back up that rather superlative description. If your goal as a guitar player is to be able to truly PLAY the guitar, not just learn by rote; to be able to invent on the fly, not memorize every note; to be able to see the WHOLE fretboard as friendly, familiar territory, not just the first 5 frets and to do it all without thinking about all those scales and modes, then you should read more here.