This document provides information about studying medieval history through primary and secondary sources. It defines primary sources as things created during the time period being studied, such as artifacts, documents, and artworks, which provide first-hand accounts. Secondary sources are defined as materials created after the time period, such as textbooks, movies, and essays. The document emphasizes that primary sources are important because they allow historians to make their own judgments, while secondary sources provide context and interpretation. It also discusses evaluating the authenticity and reliability of primary sources and the importance of corroborating information across multiple sources when studying history.