I have used LO to write a book and to format it for Createspace and for KDP (Kindle). I’ve written brief articles about these formatting tasks. Is there anywhere on LO website that I can publish them?
Oh yes - thing you want to do is called user contribution. You can try posting these on https://help.libreoffice.org/
To get general idea what its about, see: https://www.libreoffice.org/get-help/community-support/https://www.libreoffice.org/get-help/community-support/
The Document Foundation Wiki looks like a good place to add your articles. I haven’t gone through the FAQ yet, but from the looks of one of the pages (Converting ODF to EPUB) it seems like they allow normal user contributions.