I was kind of blown away by the video linked below. I surprisingly learned a lot and not just because i watched on 2x speed.

“Open source is social coding”

Fresh eyes

Documentation

Git underpins GitHub

GitHub also gives issues tracking, project boards (like trello boards), GitHub actions, etc.

How to find projects to contribute to

How to make issues and PRs

How to make money from open source,

Sources

Eddie Jaoude on FCC here