1. Go to the promotion page (https://www.heise.de/download/gutschein?aktion=5) (in German). Enter your email address, enter the verification characters from the picture and click the Code zuschichen button
2. A link to confirm your registration will be sent to your email. Follow the link, enter your email address and click the Tarif Aktivieren button .
3. After that, another letter with confirmation of registration will be sent to your mail. Open the letter and click the Account aktivieren button .
4. The account registration page will open, where you need to come up with and enter your username (Benutzername), password (Passwort) and password confirmation (Passwort wiederholen). After filling in the fields, click the Benutzerkonto erstellen button