http://www.officewiki.org/
Hopefully this will be a place where you can learn more about writing .NET code against Office, as well as a site that will continually be refined as you participate in editing the site directly. The initial site was machine generated by a tool I wrote, this provides a BasicSiteFramework to work within, but there's still lots of room for contribution. For example, every page of generated documentation has a section called "When would I use this", "Tips and Tricks", and "Sample Code". These are sections that you can and should edit to provide more information about how you've used a property or method in the Office object model. Editing is simple--just double click on the page you want to edit.
Also, all documentation pages are linked to the VBA documentation in Office 2003, Note that you have to right click on the documentation links, choose Copy Shortcut, then paste the copied URL into the address bar. (For more information see DocumentationHelp).
-- EricCarter
Microsoft.Office.Interop.Excel
Jump directly to the main ExcelIndex.
Microsoft.Office.Interop.Word
Jump directly to the main WordIndex.
Microsoft.Office.Interop.Outlook
Jump directly to the main OutlookIndex.
Microsoft.Office.Core
Jump directly to the main CoreIndex.