This page provides examples of the types of content that can be found in the Congressional Record Permanent Digital Collection. Since the Congressional Record is printed every day that Congress is in session it includes a lot of content.
A good tip for searching the Congressional Record is to limit to a date range so when searching for a specific speech, address or tribute limit by the date range to narrow the search. Using the All Fields including Full Text is a good way to search for specific phrases in speeches that have been named later (such as Wilson's Fourteen Points) but may not have been printed in the Congressional Record using the speech name.
Also remember that speeches inserted into the Record (such as Martin Luther Kings I have a Dream speech) are printed after the day the event occurred, unlike speeches by Members of Congress which are printed the day they happened.