Here is what I do not provide for those new to webinars.
Your role will be to provide the Speaker, the presentation, and PPT. You will market the event to your audience. You need to purchase a GotoWebinar or Zoom program. These programs can be purchased monthly or annually (https://www.goto.com/pricing/webinar or https://zoom.us/pricing/events). We can discuss the package that will be best for you.