Patrick Winston (1943-2019) was a computer scientist at MIT. Every year he gave a popular talk titled How to Speak. Here is a recording of the talk from 2018:

Patrick Winston (1943-2019) was a computer scientist at MIT. Every year he gave a popular talk titled How to Speak. Here is a recording of the talk from 2018: How To Speak by Patrick Winston: https://www.youtube.com/watch?v=Unzc731iCUY https://www.youtube.com/watch?v=Unzc731iCUY A book of his insights was published in 2020: Make It Clear: Speak and Write to Persuade and Inform. I'm half-way through the book and it is good so far. Although the book pitches itself as suitable for anyone who writes or speaks, many of the examples in the book have an emphasis on speaking in an academic or teaching setting. However, there are good insights that anyone can learn from. I recommend watching the talk above first to help you decide whether the book will appeal to you (the material in the lecture is in the book as are additional insights). There are lots of reviews of the book on the Amazon US site too.