Cybersecurity Essentials is a comprehensive, modular cybersecurity course designed to provide learners with a complete foundation in security principles, technologies, and operational practices. The course is organized around the full CompTIA Security+ objective structure and is divided into clearly defined domains and modules, each aligned to specific security concepts and real-world responsibilities. The course emphasizes applied learning by integrating simulations and tool-based exercises that reflect common enterprise environments. Domain reviews and assessments are used to reinforce understanding and measure progress throughout the course. Cybersecurity Essentials is suitable for individuals new to cybersecurity, IT professionals transitioning into security roles, and learners preparing for the Security+ certification by building both conceptual understanding and practical, job-relevant skills.