Basic AD account creator | Modify to your environment needs

CreateADUser.ps1

$firstName = Read-Host "What is the users first name?"
$lastName = Read-Host "What is the users last name?"

# Default username setting is first letter of first name and full last name Ex: John Smith = Jsmith
$recommendedUser = $firstName[0] + $lastName

#Password set to "Password1" feel free to change
$password = (ConvertTo-SecureString -AsPlainText "Password1" -Force)
$fullName = "$firstName $lastName"

try{
  #Checks if account already exists, if it does it will ask you to create a samaccountname
  Get-AdUser $recommendedUser | Select SamAccountName
  Write-Warning "Username already exist."
  $newUsername = Read-Host "What would you like the new username to be?"
  Write-Host "New username will be $newUsername"
}

catch{
  $newUsername = $recommendedUser
  Write-Host "Perfect! Setting $recommendedUser as the username" -ForegroundColor Green
}

finally{
  #Feel free to add or modify as needed
  New-ADUser -Name $fullName -GivenName $firstName -Surname $lastName -DisplayName $fullName -SamAccountName $newUsername -Path "Set OU Path Here" -AccountPassword $password -ChangePasswordAtLogon $True -Enabled $True
  Write-Host "Successfully created the user account" -ForegroundColor Green
  pause
}