My dad did a similar course in the hunter valley about 6 months ago- after being assured work by everyone involved, he hasn't been able to even get an interview, let alone find a job, so be careful of what the people running the courses tell you. Your best bet may be to try and make contact with some of the employers first to find out if there is any work available before you do the course. Otherwise you may waste your money.
And you'll probably find there will be an awful lot of people out there that watched 60 minutes on the weekend and are having similar ideas
, so there'll be an awful lot of competition for those jobs
Hope this helps