Here are a 5 links to useful ressources for those of us who are afraid of speaking in public and would like to learn tips from the best on the planet (well, among the best!).
Let's start with a video sharing the 3 best tricks from Barack Obama. Less than 5 minutes long. Very clear and efficient, presented by Carmine Gallo, which can be studied himself as he uses some of the same tricks!
Another video "How to start a speech", 9 minutes, is a presentation in front of a crowd. Shows some bad ways and the 3 best ways to start a speech.
A very nice and clear article "10 Keys to Writing a Speech" on Forbes. Great quality, should be read by everyone. I particularly like this quote from the Poet Maya Angelou that once noted, “I’ve learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel.”
In most speech situation, you will end up having to do some storytelling
This one is a thorough review of "how-to" write a speech. On Wikihow - How to write a speech. Verey detailed review of the steps into writing a speech. Includes a few sample speech as well.