OS X public beta: The ultimate guide

[iMore.com]

Apple has released a public beta for the upcoming version of OS X El Capitan. That means you can now register to try it out, enroll your Mac, download it, and start to experience what's coming this fall. It's a real beta, though. So you shouldn't put it on your primary Mac, and you should know how to downgrade back to Yosemite if you need to. That's where this guide comes in!

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