As my good friend
Please note that that once you have filled out the form to get the download, you'll receive an email from email@example.com containing your serial number. Armed with this serial number you go to http://www.pandasoftware.com/support/register and enter your personal information there.
You will get a generated username and password that you need to type into the options of the program so it will automatically download new updates from the Panda Software Site. Since the installation requires some reboots, you properly will need round about 20 Minutes for downloading, installing, registering and updating the program.