Teaching a recently born puppy is more complicated because they have not fully developed the capability to hold their need to pee or poo. Some experts recommend starting the training process at around four months which is when bladder and bowel control begins to occur.
One way to start adapting your dog to the process is to begin taking him or her out as many times as possible. This will begin to familiarize your pet with the idea that leaving the house means an opportunity to go number one and number two.
Keep in mind that your puppy will not understand that it is not ok to pee or poo inside the house until he is told not to do so. The first times, when accidents begin to happen, tell him in loud and firm voice “no”. Make sure that you don’t yell or hit him because it can slow down the training process.
If the animal goes inside the house, clean it immediately, this way the dog does not get used to using that specific space for this purpose. The best is to clean it up with vinegar which will help remove the smell completely.