The COM Programmer's Cookbook
http://msdn.microsoft.com/en-us/library/ms809982(v=MSDN.10).aspx
The COM Macro-Architecture Topology
http://www.codeproject.com/KB/COM/macrotopomain.aspx
Introduction to COM - What It Is and How to Use It.
http://www.codeproject.com/KB/COM/comintro.aspx
Rating:
Saurabh Dasgupta - 03/06/2001
A step-by-step guide to creating COM components using Visual C++ - without the help of ATL or MFC
Beginner-Level COM Tutorial
Rating: 
Naveed Ahmed - 07/19/2000
Very quick and easy tutorial for someone looking to "get their feet wet" with COM
Automation and Eventing with Word
Rating:
Christian Staffe - 02/22/1999
regrouped
Automating Microsoft Office Applications
Rating:
V Girish - 08/19/2003
This tutorial helps you learn the basics of automation. With this code, you can control PowerPoint from your application. You can open PowerPoint programmatically, open any presentation, go to any slide that you want, run the slideshow, and more. The same concept can be applied to any one of the Microsoft Office applications.
COM Interface Hooking and Its Application, Chapter I
Rating:
Zhefu Zhang - 10/08/2003
Tutorial on designing and implementing a program interacting with MSN Messenger 6.0+.
How to Implement a Mouse Hover/Leave Message on the System Tray
Rating:
genie0610 - 09/09/2004
Ever wanted to get a mouse hover/leave message from the system tray? The Windows shell doesn't support that. This class is a solution that works.