Primary Sources are records of events or evidence as they are first described or actually happened without any interpretation or commentary. It is information that is shown for the first time or original materials on which other research is based.
Original written works (poems, diaries, court records, interviews, surveys, original research or fieldwork, research published in a peer-reviewed journal)
Secondary Sources offer an analysis or restatement of primary sources. They often try to describe or explain primary sources. They tend to be works which summarize, interpret, reorganize, or otherwise provide an added value to a primary source.
Reference materials (dictionaries, almanacs, encyclopedias, textbooks)
Books and articles that interpret, analyze, critique, or review original fieldwork
As you explore, jot down list of relevant and related terms to use more in-depth searching
Jot down what kind of primary sources you will need - presentations, maps, statistics, photographs, regulations, etc.