After some minor amendment (correcting minor errors in text and
incorrect styles) I've published the Math 4.4 Guide. This book has
been revised and rewritten by Peter Schofield, who has IMO improved it
greatly. Thanks, Peter!
It's available in ODT and PDF here:
http://www.odfauthors.org/libreoffice/english/math-guide/published
and here:
https://wiki.documentfoundation.org/Documentation/Publications
Soon to be linked from https://www.libreoffice.org/get-help/documentation/
Printed copies to come; I'll let you know. Blog post will be written eventually.
Also, I will copy my changes into the Getting Started with Math
chapter Peter provided for the GS book.
--Jean