I've just release two "new" CAD reference books:
-- Inside AutoCAD LT 2006, Volume 1: 2D Drafting is a beginner's tutorial for learning AutoCAD LT, Autodesk's cheapest CAD package. This PDF ebook works equally well with LT 2007 and 2008. It's 224 pages long and is priced at US$22.40. You can learn more about it from upfrontezine.com/ilt6-1.
-- Inside AutoCAD LT 2006, Volume 2: Management & Customization is the intermediate and advanced LT user's reference to CAD management and LT customization. Also works equally well with LT 2007 and 2008. At 158 pages, it's priced at US$15.80. Full table of contents and sample pages at upfrontezine.com/ilt6-2.
I put quotations marks around "new," because these two CAD reference books used to be a paperback book titled AutoCAD LT 2006: The Definitive Guide from WordWare Publishing. I split it into two ebook to make it cheaper to buy just one part of the book, as well as easier to download as a PDF file.