In this course, you will learn about some essential methods and operations required to maintain a population-based cancer registry that aligns with international standards.   You will learn which persons and tumors to include in the registry and the basics of collecting data on these cases. Coding data according to internationally recognized systems such as ICD-O and TNM is introduced.  Following these recommended methods will allow comparison of cancer data for your population with cancer data collected from other populations. The intended audience is international, focused on staff in existing cancer registries.  The materials assume familiarity with basic epidemiological concepts, such as measures of burden and risk, and basic understanding of anatomy and cancer as a disease.