Yes, you can use Zotero with the Word or Libreoffice plug-ins to cite while you write in those word processors.

Yes, Zotero will take care of re-numbering the citations as you move text around or insert/delete citations. Zotero will also let you switch citation styles with the click of a button.

Zotero can do a LOT more! If you have PDFs of these articles, you can drag-drop them in to Zotero and it will try to grab the metadata. This works well in most cases, but even then, the highest quality metadata happens when you add items directly from the journal or database page.

There's many more features which you can read about starting from here:
https://www.zotero.org/support/kb

I'd like to add doi's to my Vancouver style bibliography. I've browsed the Style Repository for Vancouver variants - if the style doesn't add it automagically, is there a guide on adding the doi field?

Thanks

Vancouver (superscript)

Alright, thanks for the tip to change the other file parameters.

I tried modifying Elsevier-Vancouver but its existing bibliography style wasn't as comprehensive as Vancouver (superscript) so I modified that instead.

I edited in the Zotero style editor and saved the .csl file to desktop and then loaded it into Zotero – there was a warning that the file wasn't a valid csl file but it seems to be working fine.

Will continue to test, if it's ok – should I upload to the Style Repository?

Here's the offending section. I removed the "<>" characters from each line because they caused the code to disappear on the forum post (but they remain in the .csl file). The CSL Validator gives the error at line 98 with msg: "Element “if” from namespace “http://purl.org/net/xbiblio/csl” not allowed as child of element “choose” from namespace “http://purl.org/net/xbiblio/csl” in this context. (Suppressing further errors from this subtree.)"

I Cut and Pasted the DOI section from the Elsevier-Vancouver access macro into the same section of Vancouver (superscript).

Any help appreciated.

93 macro name="access"
94 choose
95 if variable="DOI"
96 text variable="DOI" prefix="doi:"/
97 /if
98 if variable="URL"
99 group delimiter=": "
100 text term="available at" text-case="capitalize-first"/
101 text variable="URL"/
102 /group
103 /if
104 /choose
105 /macro

Thanks, that fixed it on the CSL Validator site.

I presumed that both the "else-if" and "/else-if" opening and closing arguments were required.

However Zotero still asserts that the style is not a valid .csl file but adds it to Style Manager and appears to run it fine so far.