Here are some resources to get you started learning about PowerShell:

 Materials to read

  PowerShell User Guide

 Scripting with Windows PowerShell

Task-based Guide to Windows PowerShell Cmdlets

 TechCenter Sample Scripts

 Blogs

Windows PowerShell Team Blog: http://blogs.msdn.com/PowerShell

Arul Kumaravel's Blog: http://blogs.msdn.com/arulk

Lee Holmes' Blog: http://www.leeholmes.com/blog

 Marc van Orsouw's Blog: http://mow001.blogspot.com

 Abhishek Agrawal’s Blog: http://abhishek225.spaces.msn.com/PersonalSpace.aspx