Install Windows Azure Active Directory Module for Windows PowerShell

The cmdlets to connect to Office 365 and the powershell module:

Please install :

•Microsoft Online Services Sign-In Assistant for IT Professionals RTW

•Windows Azure Active Directory Module for Windows PowerShell

From the below link:

http://technet.microsoft.com/en-us/library/jj151815.aspx

Connect Powershell to Office 365 using the next set of cmdlets:

•Set-ExecutionPolicy Unrestricted

•$LiveCred = Get-Credential

•$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUrihttps://ps.outlook.com/powershell/ -Credential $LiveCred -Authentication Basic -AllowRedirection

•Import-PSSession $Session

•connect-msolservice -credential $livecred

You can also perform a bulk user import directly from the portal:

http://office.microsoft.com/en-001/office365-suite-help/add-multiple-users-with-a-csv-file-HA102816061.aspx