Hi Stuart,
Depending on where you are, there are quite a few large format users scattered around Australia. We recently had a LF meeting in Melbourne, and I know that several of the guys who were there have the knowledge to answer your questions.
If you live in Melbourne, you might want to contact Mick Fagan or Paul Ewins who both frequent this forum.
Gold street Studios based in Trentham Victoria have classes on using LF cameras. Black Mountain Photography (I think that's right) in the Blue Mountains west of Sydney also have classes in usning LF cameras.
Both of them offer classes in Alternative techniques for photography as well. Platinum, salt printing, bromoil etc.
Hope this helps.
Mike
PS welcome to the forum, from Geelong