Using the PetSafe Lite Remote Trainer Dog Collar is super easy. First, make sure the collar is fully charged. Attach the collar around your dog's neck, ensuring it fits properly for dogs 8 lb. and up with neck sizes up to 28 inches. The backlit digital remote has two dedicated buttons for tone and stimulation. To train, just press the appropriate button according to the type of stimulation you want to use - tone, vibration, or static. Start with lower static levels and gradually increase if needed, but remember there's a safety lock for levels 8 - 15. You can train two dogs at once by getting additional collars. When not in use, keep the collar in a dry place. Clean it gently with a soft, damp cloth. If you have any issues, refer to the product manual or contact customer support.