HISA (ubank, ing, boq etc) -> short term, no risk, lower returns (interest rates are pretty high atm so not too bad returns)
ETFs -> medium term, medium risk, higher returns IF you invest very diversified
Individual stocks/small etfs/daytrading ->
Super -> highest returns because of tax advantages but you’re forced to put it in for very long term
putting money into super is not a bad idea but it’s a bit excessive to be doing it when ur this young tbh, like just keep the money from high school work in a hisa or an etf if you really want to, you might end up wanting the money for exchange or moving out or that sort of thing, saving up for retirement at 17 is a bit excessive lol