You can register for the webinar by using the current registration link. After you have registered, you will receive a confirmation with a registration link via email. With this registration link you can log in 10 minutes before the webinar starts. Once you have clicked on the link, you will be asked to open the "GotoWebinar Opener". After doing so, you can join the webinar.
Please check your connection before the seminar starts so you can participate in the webinar without any issues.