InstaXtreme

As mentioned before I'm planning on making my venture about extreme sports. I have looked at sport platforms and none of them offer what I'm trying to create. I want to put together youtube and instagram. The whole idea of this, is to be able to upload your favorite tricks in an instant without having to go home and upload it on youtube. I was thinking about doing pictures as well like instagram but decided to eliminate that. So the website and app will only focus on videos. I have been working on the website to get   an idea of how it will look in an app form. Now my only concern is how do i develop an app. I have looked at different websites on how to create one but no success. I tried to sign up on that website Professor Noble recommended but couldn't have access to it.