Retrieve Active Directory Group
Get-ADGroup -Identity "My-First-Group" #Ensure if group name has space quotes are used
Retrieve All Properties Associated with Group
Get-ADGroup -Identity "My-First-Group" -Properties *
Retrieve All Members of a Group
Get-ADGroupMember -Identity "My-First-Group" | Select-Object -Property sAMAccountName
Get-ADgroup "MY-First-Group" -Properties Members | Select -ExpandProperty Members
Add AD User to an AD Group
Add-ADGroupMember -Identity "My-First-Group" -Members "JohnSmith"
New AD Group
New-ADGroup -GroupScope Universal -Name "My-Second-Group"