You will request an activation key which will generate an email from Wolfram.
You will need to create a login on the Wolfram website to do this.
For Students please use this link:Student Mathematica Installations
For Faculty, Staff & Departments please use this link:Faculty, Staff & Department Installations
The generated email will have a link to download the media, or you can access it through the Campus Software Library site.
Mathematica Site License Number: L3288-3573
Eligible users can download this software from the Campus Software Library
To better assist you with any issues that may occur when downloading software, all downloads are linked to a NetID.