As a writer, I was given a book by my mother and aunt that showed me how to get started in writing. Whilst it covered the basics, I found it to be long winded and boring at times. This book is none of that. It is straight to the point, informative and treats you with respect.
The word 'said', as the other reviewer mentioned, is dealt with wonderfully. Also, there is a nice piece of advice that should be common sense to thesaurus-bashers like Paolini - do NOT use overly complicated words when writing for children. I once got told to edit out the word 'catharsis', so you can see what I mean. It is also wonderful in teaching you how to edit. My first chapter was 4900+ words. After reading this book, I edited it and it came down to 3300. The chapter reads MUCH better.
I wholeheartedly recommend this book.