This book goes hand in hand with the Udemy course with the same title (and is free for Udemy students: please use your coupon code), but can be used as a stand-alone resource as well.
Go to https://www.udemy.com/course/piano-chords-for-non-pianists/ for the on-line course.
21 lessons take you through the steps needed to be able to play through any triad progression in a musical way - opening up a world of song books, real books and your own creativity.