[SECGolf]

Encourage the learning process to begin. Give them the correct motivation to begin study - that is, explain that The Golfing Machine is not some "latest method."
It is an explanation of how and why golfers have repeatable success and why they do not have success. Give them reason to get the book and continue to study the book. Real learning in a short period of time - at minimum a tough task. Show them real life examples of how the best players in the world all execute the imperatives and essetials. Show them how poor players don't.

Mention the standardized terminology the book offers to explain almost infinite variations that can be see even amoung the best players in the world. (I'd think this would be welcome news).

I'd hope that you would indeed state that The Golfing Machine is complex and that the learing curve is steep. I'd want to think that a person labeled as "professional" would embrace complexity for more (correct) understanding.