Toastmasters is a system to help learn public speaking.
I have been going to 2 groups as I split my time between Wellington and Christchurch
In Wellington I go to Mid City group on Thursdays
http://midcitywellington.toastmastersclubs.org/
In Christchurch I go to Avon group on Tuesdays
http://avon.toastmastersclubs.org/
and I have also been to a group in Petone which meets once a month on Friday
http://acl.toastmastersclubs.org/
I think I have become more confident in general and better able to construct and deliver a speech/presentation that people want to listen to.
Since publishing this my circumstances have changed, but I still go to Midcity club.