[MarioMan]

Here’s the first time setup documentation: https://support.apple.com/en-us/105132

And the general iPhone documentation: https://support.apple.com/guide/iphone/welcome/ios

Sometimes, I wish this documentation was a bit more technical, but it’s not bad at all.

The film on the front of a new iPhone, that you remove to reveal the screen during unboxing, provides pictorial icons of what each button on the phone does. For volume down, you can see a minus in a circle. It’s the bottommost button on the left.

I’m not sure why you had so much trouble creating an Apple ID, but you can still skip that when it prompts you to do so. I believe it’s under “Forgot password or don’t have an account”.