As we explain in the “How to Best Use This Book” section of the book, for your convenience we provide this online set of footnotes, as well as the footnotes in the eBook or print book.
You might find it more convenient to have the footnotes on one screen and the book on another screen (or, of course, in hard-copy).
Please click the link to take you to the page of footnotes that matches your edition/update version of the book.