You can also try Link #1 down in my signature. By the way, you do not have to reserve Windows 10 to get it. This is just a promotion gimmick and al it does is preload Win10(which will be updated as builds get better) and you'll be told on the 29th that it's been switch on and can start installing with out downloading. This is so that the rush on their servers won't slow them down so much at GA. You'll be able to get probably from a link that downloads an installer of sorts through Windows Update.