Although it is no longer available in its original printing -- unless you can spot it on eBay -- I obtained the copyright back from the original publishers (who are no more), gave it a quick edit and minor update, and republished it. You can now get it in various formats, although I warn you that it is very Delphi-7-centric.
The site is hosted by GoDaddy.com. Very inexpensive. Lots of features that I just don't use.
The old static site was maintained with CityDesk Professional 2.0 (now completely dead update-wise, although I've managed to get it to work in Windows 10) from FogCreek, with help from NoteTab Pro from Fookes Software, and TopStyle 3.5.