How do I get the list of participants in my webinar yesterday?

Welcome to the Zoom Community, @robi1

Webinar attendance is available from the Admin -> Account Management -> Reports -> Webinar tab -> Attendee Report button. 

Most everything you could ever want from Zoom is on their pricing page:  https://zoom.us/pricing

There, click Zoom Events & Webinars in the heading:

Then click "Billed Monthly" and see the Zoom Webinars box:

Click the Buy Now button (either one works), and this appears:

If you'll need to accommodate more than 500 attendees, you'll scroll down to see different attendee capacities and their prices.  I'll assume 500 is fine for the moment.

I highly recommend setting the Monthly (Auth-Renew) option, if your plan is to start doing them regularly.  If you have just a one-time need, select Monthly (One Time) to have your license for only 30 days, and as the name suggests, it does not auto-renew.

Note that the license must be assigned to a specific user -- mostly yourself, but if there are others on the account, they would need their own Webinar license to hold their own Webinars.  If you're making money doing webinars, it's not that expensive; if you're running a non-profit, it might seem like a lot of money.

Once you know you're going to be doing a lot of webinars on a regular basis, consider changing your subscription to Annual, which brings the monthly price to $57.50, but is billed for an entire year at $690 (except the first time, they will prorate your subscription up to your next annual anniversary date and bill you for a full year at that time).

Running webinars isn't too much different than running a meeting... but there are important differences to know.  Learn as much as you can about webinars before your first event!