Witty, smart and provocative, Nina Hartley knows sex. As a sex performer sexual adventurer and sex educator, she's done the fieldwork. Whether you're trying to reignite the passion with a longtime partner, or explore new terrain with your lover, Nina offers a variety of ideas to achieve exhilarating, deeply satisfying, intimate, and profoundly liberating sex. This set includes 4 instructional guides: Guide to Multiple Orgasms, Guide to Simultaneous Orgasms, Guide to Female Ejaculation, and Guide to G-Spot Sex.