Further explanation of a concept-prejudice

This textbook gave a lot of meaningful insight into the world of communication. Out of all the concepts that we covered, I feel like the idea of prejudice and stereotypes could have been elaborated on. In the chapters covering intercultural and multicultural communication, there was often a lack of explanation of where prejudice comes from. I would like to learn more about the stages of prejudice and ways to avoid it. I do, however, like that the book touched on culture so much I guess I was just looking for a bit more explanation or theory research. I know that a lot of prejudice and bias comes from the upbringing of a person. Maybe more examples would also be helpful in trying to understand cultural diversity. Coming from a multicultural background, I feel like this information would have appealed to me and caused me to learn more about this subject.