You can repurpose your E-Book into a Teleseminar or Webinar.

To do so you use Powerpoint to create slides for yourself

For a Teleseminar you set up a conference line with a host phone number and pin for the host to use and a participant number and pin for attendees to use

Use an autoresponder with a list of your customers to send out a series of emails promoting your presentation with a landing page so they can sign up for the date and time it's offered.

The first one is usually an overview of what will be covered in depth when they sign up for your paid program