I am currently reading: Coding with XML for Efficiencies in Cataloging and Metadata by Timothy W. Cole, Myung-Ja (MJ) K. Han, and Christine Schwartz.
I have been working with XML for a few years now in different contexts – but I have always been working with the structure itself – not its search, transformation, or display.
So this text has been a useful intro to xsd (schema document), xPath, and xQuery – especially as the library where I work migrates to Exlibris’s Alma – which allows for metadata manipulation in XML.
The other key relevance to work is a digital preservation platform we are migrating to from contentDM may force us, for certain types of digitally preserved materials, to write XSL. If we need this, I will be able to help more now. 🙂