All these guides are $10. "[These] examination guide[s] contains a complete exam description, including knowledge and skills required, sample questions and answers, test-taking strategies, scoring information, and study resources. In addition, you will receive three files at no extra charge that contain chapters from the Official Study Guide to the CLEP exams: Preparing to Take CLEP Examinations, Taking the Examinations, and Interpreting Your Scores. Please note that the examination guides contain the same content that appears in the CLEP Official Study Guide. In other words, if you have already purchased the book, there is no additional information to be gained by also purchasing the exam guide in a particular subject."
The links below will take you to the pages on the College Board's official website for the CLEP test, which will tell you what the exam will cover as well as general topics you need to know.
"World Languages - CLEP Test Prep" by Harford Community College is licensed under CC BY 4.0