Wondering if there is a more comprehensive list than this one:

https://blog.oxygenxml.com/xslt_training.html

The specific need is to solidify/expand the XSLT skills of someone who has
taken over my responsibilities in that domain. They have intermediate skills
in XSLT 2, so the ideal would be any in-person or online training that would
(1) review the fundamentals of XSLT 2 or 3 and (2) focus on what's new in XSLT
3.

Thanks,

David

--
David Sewell
Rotunda Imprint Manager (retired) and consultant (current)
The University of Virginia Press