The website is a little dated and navigation could be easier, but all of the information is there, except for some of the front matter. Each chapter of the online version has a clickable chapter outline and includes homework problems and a section for further reading. The text features hundreds of full-color illustrations and the quality is what you would expect from a major publisher. There is an index which is partially hyperlinked to the text. Those sections that aren’t linked very difficult to use, since the browser-based version doesn’t include page numbers

The first 25 (of 34) chapters are collected in a PDF for those who prefer to read offline or to print. There’s no explanation on why the remaining 9 chapters were left out of the PDF. The PDF is read only, with no index, but you can use the index above as a cross-reference, as long as the material you’re looking for appears in the first 25 chapters. The PDF also lacks clickable links or a table of contents and other concessions to ebook decency.

There’s also what appears to be a companion website with many more resources, although as of this writing many (not all) of the links were broken due to a recent server upgrade.