Head to CloudReady's page for the Home Edition and follow the instructions to turn a USB drive (8 GB or more) into a CloudReady installer.

It's easiest to make the USB installer on a Windows device, but you can also use a Mac, or this pre-wiped Chromebook, to make the installer.

If something goes wrong trying to use one USB drive, try another. They're more finicky than you'd expect for being "universal."