1) Take your dog to dog school. Take him, not leave him in doggy day care. Your dog will learn to socialise at a young age (very important) and you will learn how to handle and train your dog.
2) Zak George On YouTube has great content for beginners
3) Frequent and short training sessions are better than infrequent and long ones
4) Enjoy it. Millions of people have dogs, it’s not extremely difficult to do. If you have the time to give your dog affection, exercise and mental stimulation you will be an excellent dog owner.
5) Seriously. Dog school.