New ask Hacker News story: Ask HN: Any good resources you have used becoming a better confidence speaker?

Ask HN: Any good resources you have used becoming a better confidence speaker?
2 by firstSpeaker | 1 comments on Hacker News.
I am looking for some advice and some training materials, paid or free, on how to become a better conference speaker. From how the slides should look all the way to how to start and conclude. Or maybe more about what not to do as start or end.