The first 1/3 of this(essay? article?) 45 Page Document describes what a message queue walks you through creating a queue and Sending, Reading, Peeking, etc. Messages. All simple stuff available on several websites.

The middle 1/3 reproduces the asynchronous example microsoft provides on MSDN at the link above.

The last 1/3 of this goes over Web Services and how to send a Message object back and forth. Since this is handled by the Web Service Architecture, they had to use a lot of large images to fill in the information.

Throughout, several images are used to pad content. Without images, I'd expect this to be approximately 25 pages, with the information contained readily available from several sources.