Hi
I too can recommend Jody's offer.
I'm from Germany (like Ruediger) and so I wouldn't have the possibility for lessons with Jody without Skype. My next vacation is in the summer and I certainly don't want to spend it NY! But with Skype my teacher is conveniently near. I even don't have to leave my home or to use the NY subway as Jody put it (when we met in December, in NY was the "big snow", some of the subway lines were closed …)
To put it short: Skype for Concertina lessons works well and is very handy!
And as for Jody: look on his homepage, hear his Tunes of the Month and decide for yourself if his style suits you. For me it worked, just what I wanted to learn. Every lesson with Jody gives me inspirations and a lot of new ideas apart from the new songs!
Cheers!
PeterC