How to change the notification sound on my iPhone 5?

My notification for Facebook, Snapchat, all my apps is the same. & I want to change the sound. How do I do that?

Go to settings then go to sounds then you should be able to figure it out from there hope my help helps

Shove the entire phone up your dogs ***, than once he ppops it out pick it up and duct tape it to your balls. Than rip it off really fast, and than lick the end product.