I have an index.html page there that gets rendered. I tried now to add a taming-thymeleaf.html page there, but it does not get rendered.
I also tried renaming index.html to _index.html. This makes the taming-thymeleaf.html render, but my /books URL no longer shows the content that I had before.
The content of _index.html is not displayed when you visit http://localhost:1313/books because the template responsible for displaying list pages (i.e., _index.md) does not include the {{ .Content }} field.
You can of course create a layout that does display {{ .Content }} on a list page, or more specifically the books list page (), but I’m not sure how much you want to get into customizing the theme you are using, and how much you want to delve into the mysteries of