I've been slowly working my way through this book. You're right- you do really go on a journey with it. I've been savoring bits of it for over a year now. And I'm about 2/3 of the way through.
I've studied tarot with varying degrees of intensity for a few years, but I still feel like I'm a beginner. I lack self confidence in areas of my life, and tarot is no exception. I like this book because it helped me learn to trust my intuition, and to believe that listening to my own interpretations rather than those in books, or the LWB, is ok.