In the 5th Edition of Organic Chemistry, David Klein continues to set the standard for how students learn by building on his innovative SkillBuilder approach - enabling learners to effectively grasp the complex language of organic chemistry through structured, guided practice. Joining David Klein for this edition as an author is longtime collaborator Laurie Starkey (Cal Poly Pomona), whose classroom creativity, digital expertise, and positive teaching style bring a fresh perspective to Organic Chemistry. Her contributions enhance the proven SkillBuilder method, infusing it with new pedagogically relevant photo examples that make the material even more accessible and engaging for students. The new edition is thoughtfully updated with extensive content revisions, refined SkillBuilders, and fresh examples--all shaped by valuable feedback from instructors. It also introduces a wider range of diverse examples, vivid illustrations, and practical applications tailored to both Organic Chemistry I and II. Together, Klein and Starkey have crafted a comprehensive and dynamic resource that blends proven techniques with fresh insights, ensuring the best learning experience for students.