Guide de Généalogie is a French-language resource for people researching their family history, from first-time genealogists to experienced researchers. Its free online guide explains how to begin, organize and deepen genealogical research, with practical advice on family trees, ancestor numbering, relationships, surnames and reading historical handwriting. It also helps users identify and work with sources, including family papers, civil records, parish registers, census lists, military files, land records and other archives.

The site provides directories and research guidance for departmental and national archives, genealogical associations, libraries, forums and other useful organizations. Visitors can explore advice for tracing ancestors in France and abroad, including in Belgium, Spain, Italy, Germany, Switzerland, the Netherlands, Poland, Québec and Great Britain. Additional resources include a genealogical glossary, historical timelines, letter templates, archival information and topics connecting genealogy with history, education and family gatherings.

Guide de Généalogie also covers digital research tools, including genealogy software, mobile applications and GEDCOM data exchange.