Go to www.standard-time.com/downloadversion and choose your operating system.
Enter the coupon code in the space provided and click "download". You can see the status of the download in your browser.
Important: Depending on your internet connection the download can take between 30 minutes and 3 hours. The attached file has a size of 7 GB.
Go to your download folder on your computer and unzip the zip file.
Start the set up and follow the installations instructions step by step