I'll try to outline this simply (But I happen to own carpenter clamps so it might not work for you.)First undo the cable from the derailer, then I take my carpenter clamp and then lock the Derailer in the position for the first gear in the front it's the inside, the back the outside. Move the shifter lever all the way up, making sure it's lined up just right by eye from above with the chain ring corresponding, then it's just a matter of checking the cable all the way down from the lever to the derailer, and pulling the slack to the derailer, then you just hold it firmly(the cable) in place, then you tighten down the fastening bolt, then it's just a matter of adjusting the arm reach screws, so that the derailer won't go any further then the outside cogs. If you don't understand I'll be glad to explain any part that conufses you. I also use those clamps for adjusting my brakes, I can lock the arms in the position I want and then attach/tighten the cable, very very easy.