Microsoft released the SQL Server 2008 R2 Analysis Services Operations Guide, a white paper that describes how operations engineers can test, monitor, capacity plan, and troubleshoot Microsoft SQL Server Analysis Services OLAP solutions in SQL Server 2005, SQL Server 2008, and SQL Server 2008 R2.
I’ve been involved in reviewing the paper and, as you can see from the contributors list, this paper is really a must read. I strongly suggest you studying the paper if you are willing to attend to a SSAS Maestro course in the future.