To get the most out of PowerShell, you should at least update PowerShell help once. This downloads and installs the base set of help files that show when you run Get-Help on a cmdlet, or click a cmdlet in the PowerShell ISE and press F1.
Updating PowerShell help requires Administrator privileges because unfortunately the help files reside in the Windows folder.
Here is a one-liner illustrating how you can run any PowerShell command with Administrator privileges. This command would update your local PowerShell help:
Start-Process -FilePath powershell -Verb RunAs -ArgumentList "-noprofile -command Update-Help -UICulture en-us -Force"