Human sexuality is a richly diverse, engaging, sometimes challenging, and ultimately critical area of psychological inquiry. This textbook is divided into two parts. The first section, Reflections and Explorations in Human Sexuality, includes ten chapters ranging from Sexology to Gender to Sexual Behaviors. In many ways, Part 1 is a great example of introductory human sexuality and many of the subjects have personal application to one’s experiences and learning. The second section, Part 2, is Professional and Clinical Topics in Human Sexuality and covers topics such as Sexuality Over the Lifespan, Sexually Transmitted Infections, and Sexual Dysfunctions and Treatment. While Part 2 is still considered introductory in nature, it does have a more clinical/professional approach to topics in terms of learning. All these subjects hold value for students’ personal and professional development in psychology, social work, gender and sexuality studies, nursing, public health, anthropology, or other fields.