I first attended one of Martin's courses back in 2001 with a digital camera, everyone else had film cameras but it improved my photography enormously.
I then spent a day with Martin in April 2011 on a one to one which again was invaluable. The basis of that day was a review of my portfolio and questioning as to why I had taken specific photographs with particular settings as well as a full review of all those camera settings deep within the Nikon menus that we just skip over. In the afternoon Martin accompanied me into the pool to work on the weaknesses that had been identified in the portfolio review.
I can highly recommend a day with Martin, he has helped to develop my skills.
All the best