Yes, to use The E system for guitars to the full potential, its needed to go back to basics and understand, there is only 5 shapes of chord, all the rest is customization. Thanks to the guitar unique tuning, to each string relates a shape of chord. There is 7 numbers ( representing intervals) which do a lot of work for us, if we know how to use them. Eg, allow us to create altered chords, chose a skill to play over ( numbers at play) and also when and where which chord to use. That explained in plain English. The way forward is to understand not just memorize. So it looks like basic chords, but it is way more. Thank you, your question helped me realize some things :) Why monetize? This is what I know is useful.(to some) This is what I like and understand. I don't have an income. What sort of service? Course, lessons.