It is important to expose your puppy to as many new situations, people, sounds, and environments as you can. If they get acquainted with new things and situations until 4 months old, they will be more relaxed in the future.
You can also read this article in Dogo App.
Potty training. The best time to start dog house training is between 7,5 and 8,5 weeks. This is the time when puppies develop preferences and will actively search for the chosen substrate. So if you teach your dog to pee on grass, your dog will avoid peeing elsewhere.