Zoom is a video conferencing service. In order to use Zoom you will need to install the app. Don’t worry, millions of people have used Zoom for conferencing, for storytelling and for all sorts of purposes since coronavirus. You can install the relevant app on your desktop/laptop or on a mobile device. Just visit this page here which will point you to the right app for your device.
You event joining details will be in the email you received on booking your tickets. If you don’t receive the email, check spam folders. Connecting to the event will be as simple as clicking on the link and then entering the password (the link will already include the meeting ID), and then waiting to be approved to enter the event.
Here is a page with detailed instructions on how to join a Zoom meeting.