Managing my YouTube account

To upload, the first step is to log in. Use the desktop web page, do the log in that way, and look for the camera with the plus sign. This is a bit of a trick on a phone, but I can't find a way to do that exact thing on the moblie web page! It's probably a lot easier on the youtube app but I'm a dinosaur and don't feel like installing the app.

I have a subscriber! How can I find out who it was? This article gave me some ideas of where to click around: https://support.google.com/youtube/answer/7280745?hl=en