G'day Mate,
Try RC Warehouse in Brisbane, http://rcwarehouse.com.au/
& get your fuel from there, Methanol is the only stuff that will work, although OS has now got an engine that will run on Ethanol.
I mix my own fuel, don't use castor oil, it's old technology, I know lots of guys on here swear by castor, I only swear at it.
Then get yourself to a flying club ASAP, & learn as much as you can, the people at the club will help with fuel supplies.