This isn't a book about the Holocaust, as I've read in many other reviews, in fact Anne doesn't even write so much about the war. Rather, these are the thoughts of a teenaged girl who is finding her place in the world. She struggles with herself and with her parents, just like every girl in her puberty - with the only big difference that she was captive in a house in a time of war.
She writes about being accepted by her parents, about becoming a woman, about love, sexuality, and about what she wants to become. Anne had big dreams. She wanted to be more than a housewife, like her mother was. She wanted to study and learn, be a journalist and a writer - she would have become a great one, based on her diary writings - and she wanted to mean something to the world. She probably wanted to do more as she had the chance to do in her short life span, but she has made a big impression on millions of people, and I am so happy her father made that possible by publishing her diary.
After having read her diary letters, I bought a complete collection of her writings. During her time in the back house, she not only kept a diary, but also wrote several short stories and gathered 'beautiful sentences' from books that she loved.