A webinar is an educational, informative or instructional presentation that is made available online, usually as either video or audio with slides.
A webinar may take the form of an academic lecture or some other type of presentation, such as a business conference. Because webinar attendees connect online, they can use Internet-based technologies to enhance the experience, for example, communicating through instant messaging, file sharing, using a whiteboard collaboratively and interacting through social media sites.
As with any type of presentation, it's important to prepare adequately for a webinar. Tips for a successful webinar include researching the topic thoroughly, creating an organizational structure for the information, finding a comfortable pace for presentation, and testing equipment ahead of time.
The term webinar is a portmanteau -- a word made from two other words or parts of words -- of "web" and "seminar."