Well, one of the main themes could be friendship. In many of the stories, characters' relationships with their friends play important roles. Another might be self - discovery as the characters often learn about themselves through the events in the stories.
Well, in 'big book 4th edition stories', often there are themes of perseverance. Characters face difficulties and keep going. Also, themes of growth are present. They start from one state and develop into a better or more aware version of themselves. For example, a character might start as a shy person and through the events in the story, become more confident and outgoing.
In the 4th edition, you could expect improved organization and presentation of the personal stories for better readability. Maybe there are new introductions or commentaries to provide additional context.
There are many inspiring stories in it. Some talk about the journey of individuals overcoming alcoholism. For example, there are tales of people who hit rock bottom due to their drinking habits but then found hope and recovery through the program. These stories often show how they changed their lives, mended relationships, and regained their self - respect.