I dare say that if you want a book to read that explains xml then maybe this would do it. It goes into detail about XML formats,XSL, web servers and the like. But I wanted a book to help me solve a specific problem. Namely the most efficient way to search and read values from a complex xml doc. For this I'm afraid it fails miserably and is very frustrating. The code snippets are few and far between and the explanations of the commands weak. For example, one section explains 3 times that they have used an error trap (I know!!) but skims over what the xml object call is doing. There are no excercises. There are long sections with lots of xml but no VB code at all.
In a nutshell, it attempts to explain the concepts rather than attempting to teach you how to program them so if you know most of it already it could be a useful refresher. If you don't, avoid it.