Great starting point to find more about COM and Wine topics. Remember to use the site: feature to search specific sites such as site:http://www.codeproject.com/ COM service thread.

Center of the universe for Wine development. Be sure to also look at the Wine Wiki and Wine mailing lists.

Love or hate it, MSDN is the official source of documentation for COM.

Strong collection of community submitted COM documentation. Tutorial quality ranges from great to only okay, so take the time to look around a little.