Rating: 

I particularly like its section on XSL for making clear (unlike other books I've read, even from O'Reilly) what XSL's default rules are and how one overrides them, with step-by-step examples (if containing more info than your beginner will want).

It is both a great comprehensive review/tutorial and a superb reference. (There were some errata, especially in the Document Grammar, but I doubt that too many of us folks are really reading that part carefully anyways, especially with it being on the net too.)

No, I give my hearty praise to this book. In my opinion, the author must have put a whole lot of effort into this to have as few errors as it does have compared to other reference books. And like I said, it does go into some detail, but to really understand how aspects of XML and its technologies work, a person really does want to know the details or otherwise one cannot make one's own documents in an informed manner (and the book is not full of too much tech-speak, really, but only if you've already had some exposure to XML, I'd say).