She has written several bestselling advice books for girls and women, including Real Gorgeous, Up the Duff (also published under different titles outside of Australia), Kidwrangling.
[4] In 2010 Cooke accompanied fellow authors Andy Griffiths and Kate Grenville to the remote Northern Territory community of Manyallaluk, 66 kilometres north-east of Katherine, to work with schoolchildren as part of the Indigenous Literacy Project.
In 1984 she created the cartoon character 'Hermoine the modern girl’, who first appeared in The Eye and then in the late 1980s as a weekly feature in the Sunday Age and Sydney Morning Herald.
[8] Of her cartoons, Cooke said in a geekgirl interview in 1996: "I’m learning to get a whole lot better at making stuff happen on computer, but I still really love drawing in old-fashioned pen and a bottle of the blacker-than-black waterproof ink – delicious.
[9] The Modern Girl's Guide to Everything (1986) Beyond a Joke: An Anti-Bicentenary Cartoon Book (1988) The Modern Girl’s Guide to Safe Sex (1988; revised edition 1993) Keep Yourself Nice: Kaz Cooke Answers Your Etiquette Problems (1990) The Modern Girls Are Strong Diary 1992: With Hermoine the Modern Girl (1991) Real Gorgeous: The Truth About Body and Beauty (1994) The Little Book of Stress (1996) Get a Grip (1996) Women's Trouble: Natural and Medical Solutions (with Ruth Trickey) (1998; revised edition 2000) The Little Book of Crap (with Simon Weazelpantz) (1998) Get Another Grip (1998) The Little Book of Dumb Feng Shui (1999) Up the Duff: The Real Guide to Pregnancy (1999; revised edition 2009) The Little Book of Beauty (2000) The Little Book of Household Madness (2000) Living with Crazy Buttocks (2001) The Little Book of Diet and Exercise (2001) The Baby Book: A Fun Scrapbook for the First Five Years (2002) Endometriosis: Natural and Medical Solutions (with Ruth Trickey) (2002) Menopause: Natural and Medical Solutions (with Ruth Trickey) (2002) Problem Periods: Natural and Medical Solutions (with Ruth Trickey) (2002) Kidwrangling: The Real Guide to Caring for Babies, Toddlers and Preschoolers (2003; revised edition 2010) The Little Book of Excuses (2003) Girl Stuff: Your Full-on Guide to the Teen Years (2007; second edition 2013) Women's Stuff (2011) Girl Stuff for Girls Aged 8–12: Your Real Guide to the Pre-teen Years (2016) Breast Health: Everything you Need to Know about Bosoms, Breast Lumps and Beyond (2013) Escaping Control and Abuse: How to Get Out of a Bad Relationship and Recover from Assault (2013) Menopause: How Not to Go Bonkers (And What to Do Instead) (2013) Mind Your Mental Health: Dealing With Moods, Grief, Depression, Anxiety, Eating Disorders and More (2013) Period Problems and Solutions: How to Get Out of Hormone Hell (2013) Pregnancy Decisions: Know Your Options (2013) Sex with the Lot: The Modern Woman's Guide to Her Own Sex Life (2013) Should You Immunise Your Kids?