How to stream on Twitch? Steps to start on PC/smartphone and recommended OBS settings

I want to try streaming on Twitch. But I keep seeing terms like 'stream key' and 'OBS,' and I don't know where to start.When ...

Introduction: I want to make a living from game streaming. But where should I start?

Introduction: I want to make a living from game streaming. But where should I start?"I love games, so I want to be able to make a living streaming on Twitch."Have you ever thought that?It would be ...