Craig and Annabelle discuss the critical importance of starting dog training immediately to prevent behavioural issues and help the dog settle into its new home. Annabelle emphasizes the availability of various training resources, including online materials, private trainers, puppy schools, obedience clubs, and group sessions. She advises that rescue dogs also benefit from training to adjust to new household rules. Annabelle highlights the need for achievable goals, consistent routines, and agreement among all household members to avoid confusing the dog. Consistency is crucial for effective training, even if it can be challenging to say no to a dog.