Tomorrow When The War Began

Tomorrow when the war began starts off in a strange manner. The main character (Ellie ) is writing about how she had been selected to right her friends story. I thought this was a strange entrance to a novel and I found it quite irrelevant but once the story kicked off it got better. It introduced all the characters well and explain them and their parents. It also set up the story for later in the novel. If I could change anything I'd get rid of that introduction.