Super jazzed for the first time in a while

The TAFE near me is offering Community Services CertIII this year! I really wanna do it. I did the CertIV of it a while ago, but a refresher would be great. I still don't fully understand what HECKS debt or whatever theyre called work. I looked it up and from my understanding if I'm doing an eligible course (CERTIV or above) I can debt it and pay it back when I'm a millionaire making 50k a year

If I'm right that means I can't do the certIII. Visual arts would be cool to do too

So many options!