Alan, I'm afraid you've given out my url with a typo. It's http://www.etanbenami.com and then select Anglo Concertina Tutor from the no-frills directory listing. I've given it as a link here, so anyone interested can just click it.
This is a left over website from a project that I completed, and it has enough room to host a few more things. I promise not put up any pictures of nude humans with concertinas or advertise herbal supplements to improve your playing.
And I really do recommend Alan Day's tutor for anyone who does not have a teacher available.
-- Etan (not Ethan, Eton, Etam, Aetan, Atan, Eitan, or Fred -- though those are all good names)