as other replies allude it's also highly genre/goal dependant. if you're trying to make your rock band sound more like led zeppelin there is a fairly fixed set

as other replies allude it's also highly genre/goal dependant. if you're trying to make your rock band sound more like led zeppelin there is a fairly fixed set of tools and instructions (albeit futile, ultimately) if you are imagining a pure sound in your head that is not straightforwardly produced by an instrument, then it gets a lot more complicated, and there are countless routes to the same goal. the experimenting is the fun part though!