You can contact us in a variety of ways...
Via email: firstname.lastname@example.org
Via Rocket.Chat: create an account on https://chat.nzoss.nz and you can post there. There are many channels catering to specific interests. If you're not sure, just post in #general (the default channel). Many people will be available to respond to you.
Via Mastodon: after you create an account at https://mastodon.nzoss.nz and reach us by posting there.