‘Gender and Sexuality For Beginners’ considers the uses and limitations of biology in defining gender. Questioning gender and sex as both categories and forms of compulsory identification, it critically examines the issues in the historical and contemporary construction, meaning and perpetuation of gender roles. Gender and Sexuality For Beginners interweaves neurobiology, psychology, feminist, queer and trans theory, as well as historical gay and lesbian activism to offer new perspectives on gender inequality, ultimately pointing to the clear inadequacy of gender categories and the ways in which the sex-gender system oppresses us all.