Start by learning about the most well-known cognitive biases, such as confirmation bias, the sunk cost fallacy, and the availability heuristic. Read about each bias and try to understand the underlying mechanisms that lead to it.

Learn about different categorization of cognitive biases. For example, biases that lead to overconfidence, biases that lead to irrational decision making, biases that lead to stereotypes, etc.

Identify situations in your own life where you may have been affected by a cognitive bias. Reflect on how the bias may have influenced your thoughts or actions, and consider what you could have done differently.

Learn about the ways to overcome cognitive biases, such as by using critical thinking, gathering more information, or seeking out diverse perspectives.

Practice active methods to reduce cognitive biases such as debiasing techniques, mental contrasting, precommitment, and mindfulness.

Learn about the impact of cognitive biases in different fields such as psychology, economics, politics, and business.

Read and learn from experts in the field of cognitive bias.

By the type of error or deviation from rationality: biases that lead to overconfidence, biases that lead to irrational decision making, biases that lead to stereotypes, etc.

By the stage of information processing: biases that occur during encoding, storage, retrieval, or utilization of information.

By the level of analysis: biases that occur at an individual, group or cultural level.

By the type of task or decision: biases that occur in perception, memory, reasoning, decision making, or problem-solving tasks.

By the type of information: biases that occur with verbal, numerical, or visual information.

By the type of outcome: biases that lead to errors in judgment, decision making, or problem-solving.

By the type of influence: biases that are influenced by cognitive, affective or social factors.

By the type of strategy: biases that are influenced by the use of heuristics, rules, or models.