Years ago for teaching purposes I produced a short course on piano harmony, which I subsequently put online. After much revision and expansion, I’ve turned it into a slim e-volume with the title 20 Steps to Jazz Keyboard Harmony.
AT THIS DIFFICULT TIME FOR MUSIC TEACHERS, STUDENTS AND PERFORMERS, THE LEAST I CAN DO IS TO MAKE MY LITTLE BOOK FREE TO DOWNLOAD. THIS IS THE 1ST EDITION WITH A FEW MINOR ERRORS (AN IMPROVED AND CORRECTED NEW EDITION IS IN PREPARATION). I HOPE IT’S USEFUL. HERE’S THE DOWNLOAD LINK.
It’s for sale here