New to PowerShell

Hi all,

I'm not going to lie I am completely new to PowerShell and learning about it. 

I need to create what seems to be a relatively simple script for a helpdesk. 

I need to list services and their running state and permit users to enter a computer name and display the state of all services on a remote system.

I am currently researching, googling, youtube and have got to the point of: Get-Service –ComputerName computername

I am not really sure how to permit users though from here?

Any help would be welcomed.

Thanks,

Nick