One of the best books I have read this year is Brain Rules: 12 Principles for Surviving and Thriving at Work, Home, and School. The applications for presentation are many. This is a book review of sorts, though I do not highlight all aspects of the book. I focus on the three rules that relate most directly, though all the rules have lessons. Just a fantastic book.
Clipping is a handy way to collect important slides you want to go back to later.