Consumer learning is the process by which individuals acquire knowledge about purchasing and consuming products that they apply to future behaviors. There are two main types of learning - intentional learning from a careful search and incidental learning without much effort. Marketers must teach consumers how to buy, use, maintain and dispose of products. Learning theories include behavioral theories based on responses to stimuli and cognitive theories based on mental information processing. Behavioral learning theories include classical conditioning, instrumental conditioning, and observational learning. Cognitive learning involves problem solving and can be rote, observational, or reasoning-based. Marketers can apply learning theories to their strategies, such as using repetition, reinforcement, and involvement to influence consumer attitudes and behaviors.