These books are a pilot's best bet. The same material as the Test Guide is included, along with explanations for incorrect answers. All of the questions in the FAA Knowledge Test are included here and have been arranged into chapters based on subject matter. Topical study, in which similar material is covered under a common subject heading, promotes better understanding, aids recall, and thus provides a more efficient study guide. For either home study or classroom use. Save 20% off of the MSRP.