BenP created a nice compilation of PowerShell resources that can be very useful. It is so good that I am reposting here so I won’t lose it and know where to look when I need it :)

 

Microsoft Windows PowerShell Links
Scripting with Windows PowerShell Homepage
Windows PowerShell Owner’s Manual
Windows PowerShell Cmdlets
VBScript To Windows PowerShell Conversion Guide
Windows PowerShell Getting Started Guide
Windows PowerShell About Help Topics
Windows PowerShell Cmdlet Help Topics
Windows PowerShell Provider Help Topics
Windows PowerShell ISE Help
Windows PowerShell 2.0 Glossary
Windows PowerShell Quick Reference
Computer Performance
WMI Win32 Reference
PowerShell Cheat Sheet

Blogs
Hey Scripting Guy
Windows PowerShell  Blog
Richard Macdonald Blog
The PowerShell Guy
Richard Siddaway Blog
BenP Blog
Active Directory
WMI Blog

Script Libraries
Windows PowerShell Script Repository
Codeplex
PowerShell.com
PowerShellCommunity.Org
poshcode.org

Modules and Tools
PowerGui
Hyper-V Library
AD Cheat Sheet

Webcasts
One Cmdlet, Two Cmdlet, Three Cmdlet, Four: An Introduction to Windows PowerShell Commands (Level 200)
Object, Objects Everywhere: Working with Objects in Windows PowerShell (Level 200)
New Kid on the Scriptblock: Writing Scripts with Windows PowerShell (Level 200)
Amazing but True: Things You Never Dreamed You Could Do with Windows PowerShell (Level 200)
Managing  Large Infrastructures with Windows PowerShell 2
Windows, PowerShell and WMI, Unveiling Microsoft’s Best Kept Secret

Books
Windows PowerShell in Action
Windows PowerShell CookBook
Windows PowerShell  Step By Step
Windows PowerShell 2.0 Administrator's Pocket Consultant