Sharepoint 2013 - Bulk Add Users

Perhaps this powershell

http://sharepoint.stackexchange.com/questions/165866/add-multiple-users-groups-and-groups-permission-from-csv-file-to-sharepoint-20

Or this one:

http://www.sharepointdiary.com/2015/03/import-users-from-csv-file-to-sharepoint-using-powershell.html

Or here

http://3sharp.com/blog/use-powershell-to-automate-groups-and-users-provisioning-in-sharepoint-online/

Thanks but i do not have access to the sharepoint server - i am user of the sharepoint and have administrative write to change/manage the site etc.

Can I still use PowerShell to make the changes?

It depends on what access the administrator has delegated to you.
But normally users cannot add other users..

thanks I realized that in the older version of sharepoint if you had data going down in columns in excel you could easily copy and paste the information but in the new version you need it going across in excel as it cannot recognize the carriage return

Thanks