The Architect sessions is a series of Oracle products updates that are presented live (in one country), are broadcasted online and recorded.
From the overall sessions' calendar, I recommend the following session:
Click on the session description, then on the "register" button in order to register. You will be asked during the registration process to select the preferred session method: "live", "online" or "recording".
Once you have completed your registration, you will receive an email with all practical information. You will also receive a username and password to register for other training sessions on the platform.