Help me with 1984 assigment

After his first formal meeting with O’Brien, Winston receives a book, ostensibly written by Emmanuel Goldberg. In reading passages from this book, Winston is further enlightened as to “how” the current society came into being. Focus on these passages, and in particular, on the theory of the High, Middle and Low classes (page 179). If true, what does this theory hold for the proles? Is Winston’s plan for the proles now altered? Why or why not?