In 2008, Tavi started a fashion blog called Style Rookie. In 2011, she founded an online magazine for teenagers called Rookie. Rookie was home to thousands of essays, interviews, comics, advice columns, playlists, diaries, photo editorials, and other work by teenagers and their grown-up cohorts. Tavi edited the site for seven years. Rookie published five print anthologies with Penguin Random House, which she also edited and art directed. And she hosted The Rookie Podcast. Rookie folded in 2018, and has since been included in the Library of Congress's web archive. In 2021, Tavi hosted and produced a show for Audible featuring advice by Rookie contributors, Life Skills by Rookie. All of her writing for Rookie can be found here.