Still using the first edition, second edition or third edition? Follow these links for errata for those editions. Feel free to email detailed comments to me at welch@acm.org and put the word "book" into the subject. I have put a few responses up on the web. See what folks are saying about the book. The book comes with a CD-ROM that has all the examples in the book, plus a variety of Tcl/Tk freewar