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 ...
Kotaku

Twitch Plans To Shove More AI Down Creators’ Throats With Stream Coach Tool

Twitch is experimenting with an AI-powered stream coach tool, according to a post from streaming reporter Zach Bussey. The tool, unconfirmed by Twitch and seemingly only in the testing phase with a ...