Seriously, the book is not as much about celebrity as you may think from reading the reviews. Sure, the media picks up on the "names" he mentions, but the most intriguing parts to me is when he talks about the process of songwriting and his views of the folk revival.
As someone pointed out, Dylan has been discussed and written about since his first album was released. He has been quiet about his feelings. While it may not be your interest, many of us who have read the book find his comments to be enlightening. Art history helps all of us understand and grow.