Watching others' talks and reading what experts think about these talks can be very informative. Check out some of the videos and texts available. Focus upon the organizational pattern of the talk. Consider the delivery skills exhibited by the speaker. Notice the manner in which the speech is adapted to the particular audience. You will learn much!
Watch videos from today and recent history at C-SPAN or at its homepage at http://www.c-span.org/homepage.asp. From menu at left go to Featured Topics, C-Span Series, C-Span Radio, Other C-Span Sites. In the middle of the page choose from Recent Programs or Video Library, or the do a Video Search for any topic.
American Rhetoric offers the 100 most significant American political speeches of the 20th century. There are over 50 Hollywood movie speeches (available in full text and audio mp3) , over 200 short audio clips that illustrate various rhetorical devices, and over 5000 speeches.
The Library of Congress offers an online collection called "American Memory."
Go to the White House to watch/listen to major speeches by the President of the United States. You can listen to press briefings, weekly radio broadcasts, and past inaugural speeches. At http://www.whitehouse.gov/, from menu at left, click on “Major Speeches.” From there you can search by topic, news, or date.
Go to the History Channel to watch videos of famous speeches in history. To search speeches go to http://www.historychannel.com/speeches/archive.html and at left under the “Browse” heading, click on “Great Speeches.“
Sweet Briar College sponsors a website, "Gifts of Speech" featuring women's speeches from around the world.