In Chapter 1, I have accepted your changes and added some of my own,
including replacing some screenshots and moving two sections from the
chapter into the Preface. My changes were tracked, and I have left
some comments on what I've done. The file is here:
http://www.odfauthors.org/libreoffice/english/writer-guide/feedback-lo3.6/wg3.6-ch1-intro-to-writer/view
I have also created a Preface for the book, which is here:
http://www.odfauthors.org/libreoffice/english/writer-guide/draft-lo3.6/wg3.6-preface/view
--Jean