Summary: Find the Windows PowerShell help_about topics for Active Directory.

 Where are the Windows PowerShell help_about topics for Active Directory?

 If you have Windows 7 or Windows Server 2008 R2 with the Active Directory Remote Server Administration Tools
           (RSAT) installed, you also have the Active Directory Help topics.

  If you have Windows PowerShell 4.0 or Windows PowerShell 3.0 installed, you can run the following command
  from an elevated Windows PowerShell console to install them:

Update-Help -Module ActiveDirectory -Verbose

To view the topics, you must first import the module:

Import-Module ActiveDirectory

Now try the following commands:

Get-Help about_ActiveDirectory

Get-Help about_ActiveDirectory_Filter

Get-Help about_ActiveDirectory_Identity

Get-Help about_ActiveDirectory_ObjectModel

You can also find these Help topics on TechNet: Active Directory for Windows PowerShell About Help Topics.