This text provides preparation for the National Board for Respiratory Care (NBRC) Entry-Level Certification examination. It is based on the actual exam content matrix issued by the NBRC, and includes a 140-question post-test, similar to the actual NBRC exam. The first section of the text is a study guide, and reviews all of the material readers need to know for the exam. The second section is a workbook and contains short-answer questions and problems that aim to challenge readers' grasp of the content. There is also a chapter providing test-taking tips to assist readers in improving their exam performance.