Cut the old grip off with a Stanley knife, get ride off the old tape, all of it. Warp the new tape around the shaft, the length of the new grip. Take the paper of the tape off. Spray some white spirit inside the grip and on the new tape. Slide the new grip on and align the new grip correctly. Unless you have done it before, make sure the alignment is right as once dry, you won’t be able to move the grip around. If unsure, ask your golf professional to show you or to do it for you. You’ll be amaze how much difference new grips add to your golf!