The following is an excerpt from the CoachStart Manual.

The simplest thing you can start with is a ‘bio’ or Biography. A simple Word or PDF document that you can hand, fax, mail, or e-mail to a speaker-seeker. Work out what will give you credibility when creating your bio.  Include the topic of your talk and the key benefits to your audience — and a good headshot. If you have done other talks, list the groups and the topics.

You can start to expand this until you have quite a comprehensive promotional package.  You may include articles that have been written by the speaker or about the speaker (i.e., media mentions), a couple of testimonial letters, and ultimately a short video.  Many groups will request testimonials, even the ones that are not paying.

And of course — list your web site, which may eventually include several dynamic pics of you speaking, audio clips, and ultimately streaming video.