Create a presentation you can deliver which is related to that product. The presentation should be helpful and useful, and mostly pure content. If the webinar is going to be an hour long, then you should have at least 45-50 minutes of good, solid content in there before you ever even talk about the product. An exception would be if the entire point of the webinar is how to use that product.
After you create your own webinar, it's crucial to prepare your webinars in advance and whenever you are about to undertake the process, be prepared to do a lot of digging. On the Internet, you might have to create an actual live demonstration that shows what the participants would expect from their attempts and other useful links they might need to host their own projects. Preparing a webinar for the learners or peers is an involving process and you must be prepared to spend time in getting all the details correct and going all over it with a fine-tooth comb to avoid releasing a half-baked webinar to eager participants. Only when you prepare the valuable webinar content and hit the market accurately, can you make your own webinar profitable.
Using Webinar software participants can share audio, documents and applications with webinar attendees. This is useful when the webinar host is conducting a lecture or information session. While the presenter is speaking they can share desktop applications and documents. Today, many webinar services offer live streaming options or the ability to record your webinar and publish to YouTube and other service later.