At least four major periods help to understand Brazilian history from pre-contact until modern times: the era of indigenous societies prior to 1500; the Portuguese colonial period (1500–1808); the experience of the Monarchy (1808–1889); and the Republic (1889–2019). Although the expanding and varied repositories offering digital resources do not necessarily cover these four highlighted periods thoroughly, researchers should still know them before navigating through the documents and images such repositories are making freely available to the public. Historical Brazilian digital holdings can be grouped into nine broad areas: (1) documents produced by national, state, and municipal governments; (2) records relating to specific historical moments; (3) sources for immigrant, indigenous, and African and Afro-Brazilian studies; (4) collections helpful for examining labor, industry, and plantations; (5) sources relevant for sex and gender studies; (6) materials for the history of science; (7) personal and private collections; (8) periodicals (newspapers and magazines); (9) and sources related to artistic, patrimonial, and cultural production. Researchers will find abundant sources about Brazilian society, political changes, the economy, education, commercial relations, wars and revolts, urban reforms, companies, violence, customs, and values, among many other topics and issues. Scholars and students can access interviews, photographs, newspapers, magazines, books, civil and parish records, laws and reports from government institutions, correspondence, music, movies, documentaries, maps, and much more.