Look up a guy named John Hedgecoe. He shoots everything you can think of, and does it well.
YouTube is great, and I’ve learned from it, but it can be toxic too. And it’s hard, when you’re young, to separate good from bad. But give yourself time to find out what you like. You don’t have to specialize in anything if you don’t want to.
I use Flickr. I like it quite well.
If you’re interested, check out Glass, too. There are apps for Android, IOS and Windows.