Turn-on the SideWalker® and set it to ‘V’ (Vibration). Put the SideWalker on your dog and attach a leash to the ‘D’ ring. Gently pull on the leash and watch carefully for any kind of a reaction, such as a head shake, ear twitch, or any subtle change in behavior. If you do not see a reaction, increase the setting to the next level and repeat the process. When you see a subtle reaction from your dog, that setting is a good place to begin training.