Adam & Eve Instructional Guide. Nina Hartley is a pioneering feminist sex worker, promoting the fundamental human right to sexual freedom. Active as a performer, director, writer and educator since 1982, she has put her nursing degree to good use. Nina and her husband, Ernest Greene, have produced the million-selling "Nina Hartley Guide" video series from Adam & Eve (currently in its 27th episode). She is also the author of the best-selling book, "Nina ...