This is a good tutorial book on HTML - it explains concepts that most tutorials gloss over, especially the separation between structure and presentation. In fact, this was the only tutorial I liked out of the dozens on the shelf - none of the others did justice to style sheets. It's a pleasure to read Pfaffenberger's writing, but very disappointing to see the numerous editing mistakes (the Appendices are rendered useless by systematic errors, and there are several cut-and-paste errors in the main body of the book). IMHO he should have left out the ActiveX and CDF chapters, and expanded the layout section; it especially needs more example screenshots.