I just downloaded the book and flipped through it quickly --- it is incredibly thorough and has absolutely everything I could possibly want to see. It is well written and organized, with plenty of diagrams, pictures, and references. The author has been to 15 eclipses and shares pretty much everything he's learned. I was particularly impressed with all the ideas for creative shots, as opposed to the standard zoom-in on the corona. In fact I now think I'm gong to try a wide-angle shot myself.
In spite of the excellent images that are shown in the book, they still don't come close to what you will actually see with the naked eye. The incredible sight of my first eclipse in India is still burned indelibly in my memory, and I've never seen a photo like it.
For anyone contemplating going to the eclipse (and you must go!), this book is an excellent guide. Even if you're not planning to take a shot.