What to do with a new iPhone?

I have recently bought an iPhone 6. It's my first one, I'm only 13 years old. I'm not sure what to do now. It's sim free.

For a start, get a sim

Buy a sim card. Get a case for it and make a apple account. And your ready to go!

Get a sim card and activate it.
After that install the apps you want to have on it