Say nothing when you get the offer you want. Say nothing when you don't like what you're hearing. Let the silence linger, and see what happens. The longer you hold out for what you want, the more you are likely to get. A variation on Liddy's advice works for negotiation too.
Strategic silence is a good way to force the other party's hand.
If that happens, stay cool, and shut up. No going first Wait to negotiate salary until an offer is on the table. Your price goes up when the prospective employer is sold on you. And never be the one to mention salary first. If you go first and you're low, they win.