For certain assignments you might be asked to use primary sources. Primary sources are works created at the time of an event, or by a person who directly experienced an event.
It is the content that matters and an on-line source can still be a primary source. For example, an online copy of a newspaper from May 8, 1945, is still a primary source even though the original article has been digitized.
Primary sources can include:
Secondary sources are works that are written after the original event or experience; they provide criticism or interpretation of the event or experience.
Some examples of secondary sources are:
Primary Research is based on observations, interviews, surveys, data, or other insights gained by the researcher.