Primary - This is information gathered directly from actual professionals or from experience.
Primary information is critical for effective decision making.
This kind of information gathering is usually more time intensive, involves more commitment, some risk taking, and allows for dialogue. Secondary - This information is often gathered from primary sources and collected in books, videos, Internet, etc. This information is readily available and convenient in most cases. It can help to educate and inform, but may do little to effect decision making, especially when considering two viable alternatives. It is usually best, if students have little in the way of information, to start them with secondary information and then move them to primary sources.