Some of the main messages of Richards TED talk were that, violence is almost never the answer to big problems, and that ordinary people can do massive and extraordinary things, as well as logical and simple thoughts can be turned into brilliant things.
The ways he got his messages across to the audience were that he used laughter and hand gestures and facial expressions. he also used jokes and humour to engage his audience in what he was saying.
Some of the technical support he used were a microphone and a clicker he also used a screen to move his audience with some images.
Some of the presentation techniques he used well were thorough eye contact through out the whole thing, and he also made the audience laugh and keep them engaged.