The author has played golf for over fifty years, played to scratch, won the club championship at golf clubs in two different countries, and had a best-ever round of 64 on a par 72 course in America. He would be best classed as a pretty good amateur golfer. Because of ageing, he had to undergo several operations, which made him realize that his golf swing was going to have to change. That realization started a new learning phase that lasted several years, and his findings are presented as t...