When speaking, your objective should be to give the audience a gift of something that you learned. If you conceptualize your talk that way you can come closer to being as relaxed and comfortable as the greatest TED speakers – many of whom are not professionals, but simply passionate about communicating their message. Speak conversationally like you would to someone you care about. via 5 Secrets of Public Speaking From the Best TED Presenters BY Jessica Stillman
The best form speaking and presenting your ideas – be truthful and just be passionate about it.