New-MsolUser.ps1

Import-Csv -Path "C:\temp\Users.csv" | foreach {New-MsolUser -DisplayName $_.DisplayName -FirstName $_.FirstName -LastName $_.LastName -UserPrincipalName $_.UserPrincipalName -UsageLocation $_.UsageLocation -MobilePhone $_.MobilePhone -LicenseAssignment $_.AccountSkuId} | Export-Csv -Path "C:\temp\NewAccountResults.csv"

Users.csv

UserPrincipalName,FirstName,LastName,DisplayName,UsageLocation,MobilePhone,AccountSkuId