This practical guide is designed for students conducting granulometric analyses of sediments collected in the field, whether on foot or aboard oceanographic vessels. It covers essential definitions and explores various technical approaches for sediment analysis. The guide begins with an overview of the primary sampling methods, followed by a detailed presentation of the laboratory equipment. It then delves into the granulometric analyses themselves, explaining the fundamental formulas for granulometric statistics. Additionally, it discusses methods for studying grain shape, measuring carbonate content, organic matter, and water content. The guide concludes with examples of sediment mapping.