This thesis examined digital media ecologies of young adult fiction in contemporary book culture. It explores how young people engage with reading and books via digital platforms through case studies of Australian fiction (Illuminae, The Boy Who Steals Houses and House of Hollow), and through drawing on survey responses and focus group discussions with Australian teen readers. The project explores how teen reading intersects with popular social media platforms such as TikTok, Instagram and YouTube and other digital forms such as blogs and review sites. The research demonstrates the importance of understanding and fostering digital media engagement to encourage recreational reading among teens.