Nowhere. Come back in a decade. Anyone who tells you otherwise either lucked out with one of the astonishingly rare exceptions that didn't fail and wasn't run by psychopathic teenagers or, far more likely, they're trying to con you out of your btc or be sucked into their own deluded investment fever.

And plenty of people will probably suggest gambling. Amazingly enough this is not considered a valid avenue for investment on the rest of planet Earth.