There are 2 different kinds of shot girls - are you talking about the shot
girls that work for the bar, or working promotions for liquor companies? If
you're talking about working promotions, the best way to get into it is to be
at a bar where they're doing it, strike up a conversation with one of them,
and simply ask - getting onto those teams isn't TOO difficult, it's just that
they rarely do open hires, you gotta know where to go.