Find out whether the college you are attending accepts CLEP credits and/or offers testing on site.
Search for a test--there are 34 choices, ranging from foreign languages to business to English/language arts. All of the tests offered cover what would be introduced over a semester-long course.
Register for a test at the nearest testing facility. Register at least a month before taking the test.
Gather a variety of study resources. Get the CLEP Official Study Guide ($24.95). Or, if you know you will only be taking one exam, you can buy or download specific exam guides for $10 from the official website.
Set aside study time on a daily or bi-daily basis. These tests are difficult and can cover a wide variety of information.
Study hard, stay calm and be confident. As long as you are prepared and feel comfortable with the information in the study resources, you will do fine.