In George Orwell's 1984, what are the purposes (main theme) in books one, two, and three? I was just wondering how these different purposes in each...

Part One's
purpose is mainly to teach the reader about the Party and how it works. We learn about Newspeak
and its function, we learn about the Thought Police, the telescreens, Two Minutes Hate,'s job,
Oceania, other regions of the world, we meet key characters that come in to play later, and
ultimately we learn of Winston's Thought Crimes and notorious journal that is the
vehicle...