This concise course is designed to provide participants with a solid grounding in ISO/SAE 21434, the standard for automotive cybersecurity. Beginning with an overview of the automotive cybersecurity landscape, the course introduces the structure and foundational layers of ISO/SAE 21434. Participants will become familiar with the specific terminology used within the standard and delve into the key areas of cybersecurity risk management and the cybersecurity process framework. The course also covers the application layer, detailing the concept, product development, and operations and maintenance phases. Supplementary annexes and practical implementation strategies are discussed, alongside common challenges and solutions to reinforce understanding and application of the ISO/SAE 21434 standard in a real-world context.