Other novels by Rainbow Rowell include Attachments (2011), Eleanor & Park (2013), Landline (2014), Carry On (2016) and Kindred Spirits (2016).
J.K. Rowling's Harry Potter series is the clear inspiration for Rowell's Simon Snow character. For other young-adult fantasy novels, consider The Chronicles of Narnia and His Dark Materials series.
For other offbeat coming-of-age novels, consider Stephen Chbosky's The Perks of Being a Wallflower (1999), The Fault in Our Stars by John Green (2012) and Looking for Alaska, also by John Green (2006). Melina Marchetta's 2006 novel Saving Francesca also focuses on the school life of a protagonist, who, like Cath and Wren in Fangirl, has a parent...