XML: the grab-bag, so-what-you-will, make-it-up-as-you-go-along, there-are-rules-strict-rules-(sort-of) technology that bends you to its will as much as you can bend it to yours. And this book is a decent round-up of the most common, widely-deployed implementations -- with enough general knowledge to help you sort through the more specific ones (or help you in creating your own).

A better title for it might have been: "XML: A Developer's Almanac". (Which, I suppose is a good-enough alternative title for any book in the O'Reilly "Nutshell" series.)

This book is by far the best book I've read on XML. Typical of O'Reilly "In a Nutshell" books, the converage of XML is fast paced and complete. Your money will be well spent on this book. I even think most beginners will do well with this one!

This book claims to be your only needed guide in XML and related topics. It covers almost all you can imagine. I liked it very much and glad, that I have a book, that I can use like XML reference.
I have just nothing to say about this book except it contains ALL information one can need on XML.

O'Reilly's XML IN A NUTSHELL is, like all entries in the Nutshell series, a desktop quick reference. It provides concise information about nearly all matters of XML, and is split into roughly four parts. The first introduces XML, the concept of tags, well-formedness, Unicode, DTD's and schemas, namespaces, and so forth. The second provides an overview for the many formats that are built upon XML, such as XHTML, XSL:FO, Docbook, etc., and technologies that plug-in into XML, namely XSLT, XPath, XLinks, XPointers, XInclude, and CSS. The fourth covers DOM and SAX, the APIs for dealing with XML. Finally, the book ends with a "Reference section" for various technologies covered earlier in the book, structured much like O'Reilly's pocket guides. I found the Reference section somewhat inconvenient, it causes flipping back and forth when each section could have been simply integrated with the previous discussion of the relevant technology earlier in the book. Furthermore, the book ends with a long series of Unicode character tables, which are of limited utility, as they cover only a portion of Unicode, which has already expanded in the time since, and these tables simply bloat the book a little.

This third edition is especially admirable for its advocation of schemas, whereas many other XHTML publications would mention only DTDs.

XML IN A NUTSHELL is emphatically not a tutorial for XML, in spite of the friendly introduction to the markup language that opens the book. For each of the technologies mentioned herein, you'll want a separate book. For XPath especially, O'Reilly's XPATH AND XPOINTER is worth getting. XML IN A NUTSHELL instead provides only a quick reference for matters the reader is already acquainted with. Now, much of this quick reference information can be freely had on the Web. I'd recommend the book only to those who are fortunate enough to have someone else cover their book expenses, or can get it from their library, or those who simply adore print documentation.

I took this book as it was a recommended book for one my courses.. i thought it would be same as other text books, where you actually LEARN THRU THE BOOK..

But this book is STRICTLY for a reference purpose.. I had to take another book to learn the basics of XML.. also, the net tutorials helped a lot..

Though, as a reference book, I'll give full points to it.. once you have the basic knowledge about XML, you can really use this book to its optimum level, and it really helps you to refer ALL the types in XML..

So if you are starting to learn XML, I would advise to take a simpler book, like "XML Applications" and go through the net too.. but once you are done with the basics, buy this book the very next day, and check out what all wonders you can do through XML!!!...