Low Level Training
As both Wiz and 185 Skywagon have noted, mustering work is going to need some prior stock knowledge, and you'll need good 'on-the-job' training. You won't get this by being employed as a ringer on a teach yourself basis - you'll just feature in the ATSB review.
To start off you'll need as a bare minimum, a low level course of training NB -it's not an endorsement or a rating, and there is variation between flying schools in terms of both the course content and length. After this, you begin to learn on the job mustering.
CAO 29.10 indicates the CASA requirements, but believe me, you'll have to learn a whole heap more than that indicates to get thru most current low level courses. Expect to spend upwards of 5 hrs at it. With the usual low skills at 100-150 hrs, don't expect to do it under 6 hrs.
The low level courses are, more or less, a mix from the 1st 10 hrs of the ag rating sequences. It's not playschool stuff.
Many pilots simply can't hack it at low level, and end up turning very pale, going rather quiet, and asking to land asap. At this stage, quit unless you are bloody determined.
happy days,