Don Jones is doing a series of PowerShell WebCasts over at Microsoft.com. There are the one coming up:
Functions, Filters, and Efficiency in Windows PowerShell (Level 200) Tuesday March 20, 2007 11:30-12:300 PST
Windows PowerShell and Windows Management Instrumentation (Level 200) Tuesday April 17, 2007 11:30-12:30 PST
Converting from ...