This guide serves as an introduction to the Open Cybersecurity Schema Framework (OCSF), aimed at beginners in cybersecurity. It outlines the purpose of OCSF, which is to standardize the description of cybersecurity events within an organization's IT systems. The document explains that OCSF provides a common language for various cybersecurity tools, facilitating the normalization and standardization of data from diverse sources. It describes the roles involved in using OCSF, including authors, producers, mappers, and analysts, each interacting with OCSF in different ways. The guide also details the concept of events and event classes, emphasizing the importance of attributes associated with each event. By the end of the guide, readers should have a foundational understanding of OCSF, its significance in cybersecurity, and how to engage with its framework effectively.