Explain the organization of the Party in Part Two, Chapters 9-10 of 1984.
In these chapters, the organization of the Party is explained by Goldstein in his book, The Theory and Practice of Oligarchical Collectivism. According to Goldstein, the Party is organized into a hierarchy. At the top are the Inner Party members who enjoy certain privileges and luxuries, like a servant and a car. They are the "ruling class" whose sole aim is to "remain in power permanently." This class is also described as the "brains of the state" by Goldstein.
Below are the Outer Party members who Golstein states are like the "hands" of the state. These are people like Winston and Julia who perform the real work required to keep Oceania going.
Finally, at the bottom of this hierarchy are the Proles, the "submerged masses," who make up the majority of the population, at around 85 percent. It is important to note that the Proles are not allowed to become Inner or Outer Party members, since it is taught that they are "inferior" to those above.
At the top is Big Brother.
Next is the Inner Party -- about two percent of the whole population of Oceania. They are the brain of the state. This level has people of every race in it but it's pretty hard for anyone to move up into it from lower level.
The Outer Party must make up about thirteen percent of the population. It is the "hands" of the state. Some members of this level can make it up into the Inner Party.
No one who isn't born into the Party has any chance of getting in to it. Anyone born a prole who has that kind of drive or ability generally stands out and gets killed by the Thought Police.