Rating: 

I refer to this book all the time. For such a small book (under 100 pages), it does an excellent job of covering the core XML technologies. The book is an excellent reference for DTD, XSLT, and XPath, which is essential for XSLT templates. Good, short samples are provided. It also covers XPointer and XLink, but I haven't used those yet.

The TOC is a page and a half and their isn't any index, but I haven't had any trouble finding the information I need quickly.