When you install PowerShell, documentation is also installed. This documentation can be found under the following folder:
Start Menu ➞ All Programs ➞ Windows PowerShell 1.0 ➞ Documents ➞ en-US
The Windows PowerShell Getting Started Guide (GettingStarted.rtf) is a 32-page introduction to using the shell and the Windows PowerShell scripting language.
The Windows PowerShell Primer (UserGuide.rtf) is a companion document to the Getting Started Guide. It describes the features of Windows PowerShell and the Windows PowerShell scripting language with examples of how to use the new shell.
The Windows PowerShell Language Quick Reference (QuadFold.rtf) is a one-page foldable guide to the Windows PowerShell scripting language.