Dude i work for TAFE....
NOt all trades have pre vo classes, and with the extra increase in applicants there are now apptitude test involed in signing up, just means if you do good you get first preference if you do bad eventually you will get in...
it cost you a couple of hundred to do but it does knock off about 1 year of tafe studies..... STUDY only... you still need the 4 years of experience.. so just cos you do a prevo course doesn't mean you get fast tracked...
its good now if your willing to work, we do have a mojor shortage of skilled trades people but with this influx of apprentices you'll find in about 3 to 4 years the market will be saturated with unemployed fully trained trades people....
if you find you get bored easy do Temping work that way you get put on to many diffrent company's doing a whole range of diffrent jobs and you can choose how much you get paid, its pretty cool if your still deciding what you want to change into.... get a blue card (lets you work on a constrution site) and a fork lift licence and you'll be laughing, you'll be looking at $25 - $40 an hour Jobs...