There are many websites that help create online events. Some of them make you pay, but a lot of them are free as long as your events are free. Because you are creating an event for your in-class lesson, it will all be free. But if you want to use the event websites for other events, paid and free, feel free to sign up.
The most common event website is Eventbrite. If your events are free, the site is free to use, so this is the example we will use. Watch the video below to get a tutorial on how to use Eventbrite.