‘TED Talks: The Official TED Guide to Public Speaking’
There’s a bunch of really solid material in here. Though, as a word of warning, this book is best used as a reference manual rather than something to be read straight through.
But the thing is worth purchasing alone for the concrete tactics provided in the Visuals chapter; even if you never plan on presenting anything other than leading a meeting at work with a handful of people, the instructions in that section are invaluable.
Note: This felt like it took forever to read because I kept feeling compelled to stop and binge on hours of TED talks every other chapter!