In case you need a definition (I know I did), Merriam-Webster defines "bildungsroman" as "a novel about the moral and psychological growth of the main character." "Americanah" by Chimamanda Ngozi Adichie (£9) would work nicely here. Centreing on a young Nigerian woman named Ifemelu, the story follows her journey to America and the complicated questions about identity and home awaiting her there.