This tutorial is only applicable when you are using our built-in templates.
After you are done creating your webinar, when you go to your webinar dashboard or while you are editing the webinar, you will see something like this:
You can just either copy the URL to the landing page by going to the Live URL (number 1 in the screenshot) OR just click on Copy To Clipboard (number 2) to copy the URL. That is all that you need. You can put that URL in your Ads.