Windows PowerShell Cookbook: The Complete Guide to Scripting Microsoft's New Command Shell
Lee Holmes is a developer on the Microsoft Windows PowerShell team, and has been an authoritative source of information about PowerShell since its earliest betas. His vast experience with Windows PowerShell enables him to integrate both the 'how' and the 'why' into discussions. Lee's involvement with the PowerShell and administration community (via newsgroups, mailing lists, and blogs) gives him a great deal of insight into the problems faced by all levels of administrators and PowerShell users alike.