If you are looking for specific "work" or drills from the book:
The ultimate goal of the book is absolute impact precision. It teaches players how to sustain the "Line of Compression" by keeping the clubface square to the target line through a concept called "Steady Axis" rotation. 3. Star System Variations the golfing machine pdf work link
Mastering the Mechanics of Golf: Inside Homer Kelley’s Legacy If you are looking for specific "work" or