Book Reports / Writing an essay on Christpoher Boone (trouble getting started) [10]

Writing An Infromal Essay On Christpoher Boone (Having Trouble Getting Started)

I'm taking ENG3UB with ILC and I'm supposed to write an infromal essay on Christopher Boone but I'm not sure how to write an informal essay. Some advice would be greatly appreciated. The Novel is called "The Curious Case of Dog in the Night-time".