Henrik Walther, one of our MVPs, put up an awesome introduction to Monad in Exchange 12 at msexchange.org. He covers the basics: starting the shell, running some simple "get" commands as well as move-mailbox. The article even has action shots! Nice work. Speaking of nice work, Glen continues his excellent series on how to use Monad to do existing tasks that are Exchange related.
The point to be made here is that you don't need to wait for the release of Exchange 12 to start learning about and using Monad. The technology adapts well to exisiting systems by leveraging COM and .Net (as well as other toolsets). This is specially important in the interop world. Let's say you start migrating your scripts to Monad for Exchange 12 and you still need to do management for Exchange 2003. You can continue to use vbscript for Exchange 2003 or you can still use Monad as well. Its great to see the community starting to ramp up on Monad. If you have a cool article, send it along!