One of my super short reviews on the books I read in my My Way to PHP series.
XML: Visual QuickStart Guide by Kevin Howard Goldberg
I really love the layout of the book. It’s sounds superficial but it’s great. 
On one side there’s the code listing on the other the text explaining it. Splendid!
It’s a short book and quite practical. It’s also very easy on the reader. I could skip large parts because the examples were self-explanatory. I think it’s a good introduction if you want to work with XML, XPath and XSLT. Or just, like me, want an overview over the whole topic of XML.