Wondering where to start? The easy answer here would be to say “Just dive on in!” but that's probably a bit too vague. This book is primarily intended as a reference, so if you already know what you're looking for, flip over to the table of contents or index and start soaking in the Blendery goodness.
For those of you who are just starting out, I suggest that you merely turn a couple of pages, start at Chapter 1, and enjoy the ride. And even if you're the sort of person who knows exactly what you're looking for, take the time to read through other sections of the book. You can find a bunch of valuable little bits of information that may help you work more effectively.
Regardless of how you read this book, though, my one hope is that you find it to be a valuable resource that makes you as addicted to Blender as I am.