These recommendations came up via a query in one of the groups I belong to so I am sharing with you:

Microsoft Azure Symbol/Icon Set:
http://www.microsoft.com/en-us/download/confirmation.aspx?id=41937

Common design patterns:

http://azure.microsoft.com/en-us/documentation/articles/architecture-overview/

Cloud Design Patterns: Prescriptive Architecture Guidance for Cloud Applications:

http://msdn.microsoft.com/en-us/library/dn568099.aspx