“The book” itself is a training log book with 30 essays and the remaining pages to keep records of training, just a thought, but maybe this is their way of advising us to keep records of our own training, just a thought. If you look at the highlighted wording of the #227 page it also speaks of keeping records. Maybe the book was not to be literal, as I don’t think you will find it in a public library, but more like a bookstore as it is a journaling device… again my thoughts.