The user forum:
https://www.oghma-nano.com/forum/
E-mail:
roderick.mackenzie@oghma-nano.com
Twitter:
https://twitter.com/OghmaNano
The best point of contact for user questions is through the user forum, I often hang out there to see what is going on. E-mail tends to be quite spammy, so I don't read it much (at all/ever). I'm also trying to migrate away from using e-mail for OghmaNano type questions, as I often find my self explaining the same thing many times. I used to be on twitter quite a lot (but less recently), so messages through the forum are best. Just make a new topic and start a conversation, I will see it.