The Communist Manifesto, written by Karl Marx and Friedrich Engels and published in 1848, sets forth in a popular manner the main ideas and goals of the communist party and ideology. The Manifesto is divided into four chapters outlining the basic philosophical premise of dialectical materialism and class conflict and the forces driving history (chapter 1). It then continues to analyze capitalist mode of production and its final destiny of being turned over and replaced by communism (chapter 2). The last parts of the manifesto (chapters 3 and 4) set the political orientation of communism.
Here is a detailed summary of all of the chapters of the Communist Manifesto:
Chapter 3 and 4: Socialist and Communist Literature / "Positionof the Communists in Relation to the Various Opposition Parties"
Here you can also find a short summary of the Communist Manifesto.