Do you own a Mac and are feeling a bit left out that Windows 10 is out, and you're still waiting for El Capitan? Maybe you just want to play with Windows 10 and see it yourself. Don't sweat it, you can install Windows 10 on your Apple computer with some fairly simple quick steps, and be able to dual boot your Apple computer from either OS X or Windows 10.
Check out Daniel Rubino from Windows Central as he explains how you do it.
Get your Windows 10 iso file here.