That reminds me to promote my book, The Accidental Taxonomist, 3rd ed.
Yes, it's about how to create taxonomies, with on chapter on ontologies.
I will have only four copies along with me to sell in person at the conference at a 20% discount. Look for me there if you want one.
You can also order the book for 20% with the discount code TATKG1, which is valid only May 3 - June 15 when ordering directly from the publisher: https://store.infotoday.com/product/the-accidental-taxonomist/
You can order print or ebook. Overseas shipping is possible but costs almost as much as the book.