Setup:

• Download OS X Mavericks from the Mac App Store.
• Get an 8GB or larger USB Drive.
• Wipe the USB Drive with Disk Utility. > Make 1 partition. Name: MyVol (or any other name you want, just make sure to update the command below). Format: OS X (Journaled). On options, select “GUID Partition table”. Apply.

Step 1:

Open terminal.

sudo "/Applications/Install OS X Mavericks.app/Contents/Resources/createinstallmedia" --volume "/Volumes/MyVol" --applicationpath "/Applications/Install OS X Mavericks.app" --nointeraction

Seriously that’s it. There’s articles all over that are much more complicated. Just do this instead.