sorry to burst your bubble but nothing will replace correct training in a dojo with a good instructor.
I've done a fair bit with bokken and also have this book in my library, however technique is best learnt and perfected under the gaze & correction of your instructor!
No-one I know of has ever got any good learning from a book.
There are things that the book can't show you in technique that will make a huge difference in how you wield your weapon.
Allow me to acquaint you with my friends Mr Jab and Mr Cross...