Put the car up on jack stands, take off the front wheel and get down inside the wheel well and take a look. There should be an allen wrench type of hole in the end of the stud, you just stick an allen wrench in there and use a wrench to loosen the nut. They are pretty easy to change. I have done both front and rear when I changed my swaybars and after having upgraded ones break. When replacing it don't buy a cheap knock off oem style endlink, make sure you either get an upgraded endlink or get the oem one from mazda. I have had trouble with the joint in oem style endlinks (not made by mazda) pulling apart on the rear of my car.