I found this book disappointing.
I don't doubt the credentials of the great presenters interviewed in the book. But, possibly by the very nature of having many contributors, I struggled to find a single clear message or consistent theme. When I paid close attention there was actually a good deal of conflicting advice from the different contributors, and each piece of advice was so brief that I couldn't take a view on which suited me better.
There were plenty of gems and top tips in the book that made me think, but the substantiation and philosophy behind each of them was too thin for me to turn any of the tips into something meaningful that I could use.
I wouldn't recommend this book unless you already have a strong style that already works and are looking for tips to fine tune. If you're not a great presenter and are looking for more fundamental guidance you may simply end up confused.