A recommended strategy for introducing a dog to a 'Walk' or 'Outside' button involves placing the button in a location your dog frequently passes to the door used for walks. Start by pressing the button yourself every time you're about to take your dog out, ensuring the dog hears the word associated with the action. This repetition helps the dog associate pressing the button with the action of going outside. Consistency is vital; with time and patience, your dog will learn to press the button independently when they want to go for a walk or spend time outside.