[Koha-oz] Koha online tutorial or Koha training session

Hello, I’m working as a part time library technician at the Brotherhood of St Laurance in Melbourne and I’m looking to improve my Koha skills. I was wondering if anyone could point me in the direction of a good online Koha tutorial? Or if there is an upcoming Koha training session held in Melbourne that I could attend? Thank you. Regards, Nadine