Scott Ginsberg is the Name Tag Guy. He has a number of valuable, relevant and straight-to-the-point E-Books and articles on his web site. His "234 Things I've Learned About Writing, Delivering and Marketing Speeches" is a great book for the professional speaker and a good one for any speaker.
Here is the link to the E-Book - http://www.hellomynameisscott.com/speak234.pdf
Here is the link to his website - http://www.hellomynameisscott.com