Guitar Fretboard Logic. Access the tab and lesson material downloads catalog for as little as $3. Go to: http://www.patreon.com/kimberlyallison
Check out my Fingerboard Geometry books on Amazon: https://a.co/d/j1cuZy9
https://www.amazon.com/dp/B0D8HNSSJF/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1719875267&sr=8-2