How do I use the Microsoft VSTO interfaces?

I would like to create an addin for microsoft outlook, and am using the visual studio tools to do so.

However I am really struggling to get my head around the use of interfaces within the VSTO environment - the resources on MSDN show many useful looking interfaces, but I am unsure how to use these interfaces to access data. For example I am trying to add a new folder into an IMAP account but am finding it开发者_运维技巧 very difficult to work out how to get outlook to do so.

Can anyone recommend any good resources for learning how to use VSTO (I have VSTO for dummies, but it doesn't cover the level of detail I need, I have been using MSDN, but I have found it doesnt offer much information on how to use the interfaces etc.)

I suggest checking out the book by Eric Carter + Eric Lippert, "Visual Studio Tools for Office 2007: VSTO for Excel, Word, and Outlook". It covers VSTO 2007, and not 2010, but it gives a solid overview of the object model for each of the 3 major Office applications, and has some good explanations on the interfaces.

http://www.amazon.com/Visual-Studio-Tools-Office-2007/dp/0321533216