1) The document discusses how advertising works as a special form of communication to influence consumer behavior. 2) It explains the human communication process of how a message is encoded by a source and decoded by a receiver through a channel. This process is then applied to analyzing advertisements. 3) Consumer behavior is influenced by personal processes like learning and motivation, as well as interpersonal factors such as culture, family, and social groups. Consumers progress through stages of perception, motivation, purchase decisions, and post-purchase evaluation when making choices.