This document provides instructions on how to use OBS Studio, a free and open-source software, for recording and streaming online lectures and events. It demonstrates how to configure scenes in OBS Studio with elements like webcam, background, and scrolling text. It also shows how to set up a virtual camera in OBS Studio to broadcast the video feed into platforms like Zoom, Teams, and Meet. Additionally, it discusses using green screen capabilities in OBS Studio to integrate separate media sources. Finally, it provides steps on streaming recordings directly to platforms like YouTube and Facebook.