Araki Kodo Sensei teaches in Japan. Kodo Kai has its own webpages and you can find his teaching locations/dates there.
To join, all you have to do is to get in touch with Kodo Sensei. His phone number is in one of the webpages.
There is a rumor that our webpages are forbidden to see in China (we see no reason, though). If you cannot see our webpages, please let us know. We might construct a mirror site somewhere else.
Thank you for the inquiry.