A secondary source is information that doesn't come directly from the person who said it or experienced it, but instead, it is the information of various primary sources put together. An advantage of a secondary source is that the author gathers multiple opinions and puts them into one. This can help so that the article is not biased. A disadvantage of a secondary source is that paraphrasing can cause misunderstandings and many times, it changes the information. Some examples of secondary sources are textbooks, blogs or websites, some non-fiction books and biographies.