How to find my iPhone on iTunes?

I hit a button near the left hand cornor of the page and now my iPhone is hidden. It was simple enough to do but I can't reverse it for some reason

This is not my pic but it helps to see what I'm talking about. It is the little iPhone icon on the left side that is blue. There's a little arrow (I now know it means to hide) and I clicked it. Now I can't get it back. How to find my iPhone on iTunes

The little arrow doesn't mean "hide", it's the eject button. You use it to safely disconnect your iPhone from the computer.

Unplug your iPhone and reconnect it, and it should then reappear on iTunes.