What is livestreaming, really?

Livestreaming is broadcasting live video to an audience in real time: no editing, no second takes, no hiding behind a polished final cut. What you say is what they see. 
IRL ("in real life") streaming takes that out of a bedroom and into the world - a market, a festival, a quiet street at night - and lets viewers travel through your eyes. It's the realest, most human corner of the internet, and it's a job more people do than you'd think.
The questions below are the ones beginners ask the most. Start anywhere.