@ Patricko -- no, worker-worker-settler is a terrible idea under normal circumstances (unless you're on warlord or settler difficulty

). It depends slightly on your starting techs, but look at it like this...
Worker first is absolutely a good idea. Send him out to improve a food tile and build a warrior while he does it. Yes, the warrior will come along slowly, but the pop will hit 2 and now your worker should be improving another tile, hopefully another food or a mine.
!! Keep in mind, food also adds to settler/worker production !! Two citizens working two improved tiles > one citizen working an improved tile, BY FAR. Send the first couple of warriors out scouting for good city sites and to meet your neighbors, but keep one close to use as an escort/garrison for city#2.
As the second warrior is built, you hopefully have BW, so you can chop or whip a second worker once your pop hits 3. Now, build another warrior for garrison, and start a settler when your pop = as many improved tiles as your workers have made. Those second, third, and fourth citizens essentially become free hammers when you whip them.