So you are most likely here to find out how to sign up for OS X El Capitan and iOS 9. So how do you sign up for it? I have provided a link down below that says sign up a blue button. Just click that and sign up! It’s that easy! Remember that iOS 9 and OS X El Capitan will not be public beta until July so its a little wait, but I am sure you can do it! Please note when you install iOS 9 and OS X please make sure to send feedback and put the OS on a device that you don’t mind possible messing up.