How to make a YouTube video with an iPhone?

I want to make videos and put it on YouTube but I only have an iPhone. I tied looking it up on google but its not telling me anything. Please tell me how to do this.

Umm… Just record it. Then upload it onto a computer and upload it to YouTube. If you don't have a computer to upload to, then make your YouTube account on one. You should find something that is called a "mobile upload address". Type this address into your phone in order to access the mobile uploading site for your channel.
One tip of advice, turn the phone horizontally. I know it looks bad when you watch the videos on your phone, but it looks better on YouTube this way. If you record holding your phone vertically, you will get this black bars on the side of your video.

Please go through this application link, I think it can fulfill your requirement

https://itunes.apple.com/...41441?mt=8