For books, I do essentially the same flow as @mancub describes here. Obviously, there is no PDF involved, so it is something like this:
- Add a book’s bibliographic information manually in zotero -> .bib updated via Better BibTex for Zotero plugin
- Open helm-bibtex
- Find the book in helm
- hit
f9
(Which is edit notes - opens up org-roam capture template I have setup) - Take notes