OBS tool has quite a number of vast features. Likewise, resources online are quite vast.
Below I have compiled a  list of links, that will act as a roadmap for you to get started.

Stream your classes & teach your students online without any worries. 

OBS ROADMAP

Beginner Guide to OBS  - Configure quality of video streaming & recording

OBS Hacks  - Using powerpoints, whiteboards & annotations to stream 


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