Olivier Langlois's blog

ATL is an interesting C++ framework to easily create COM classes. It uses extensively the C++ templates and is coupled with Visual C++ wizards to automate the writing of skeleton code of an ATL project. However there is not much documentation coming with VC++ on ATL and there are so much options in the wizards dialog windows that unless you know what you are doing, you will probably not do the right thing. This is where this book comes in.

First, one of the coauthor, George Shepherd, is also the coauthor of the book MFC Internals that I really liked. This book does a good job to guide you through the main ATL features. My only complain is that, like almost every other book on COM that I have read, it assumes that you know nothing about C++ and COM and takes the first 2 chapters to introduce you these topics and that represents almost 100 pages of prerequisite material that should have been found only in a introduction book IMO.