Ok, I tried it... And it is killer! It will teach you how guitars work... Even if you play at a level where you know a bunch of chords and can play in a band, this will up your technical knowledge of how these chords are built... Nice job man! This is great for people like me who learn visually, and really opens your perspective on changing the feel of tones to better express yourself with playing... Ild say anyone who knows a few chords already, this kicks open the door and makes all the songs you make sacrifices on by substituting chords that sound "close enough" easier to nail down with the appropriate feel... I really like this a lot...