The document discusses three major models of how audiences consume media:
1. Hypodermic Needle Model: Audiences are passive and believe all media messages like a "magic bullet".
2. Two-Step Flow Model: Opinion leaders actively influence passive audiences. Other audiences passively follow the opinions of these leaders.
3. Uses and Gratifications Model: Audiences are more active in selecting and interpreting media based on how it fulfills needs like diversion, social interaction, identity, and surveillance.