Fomatting a new drive with Yosemite 10.10 OSX

Which instructionm set should I use to format a WD My Passport ULtra in a MacBook using Yosemite 10.10 OSX?

Use Disk Uitility ?

I actually just plugged it in and ithe MacBook recognized it. Time Machine started backing up and I’ve had no issues which was a plesant surprise. Thanks for yur suggestion.

Ditto… the Apple Mac is smart enought to figure this out!