Stuck at OS X Utilities while clean installing Yosemite
This sounds like the install you created is faulty somehow, possibly either a bad file copy or a bad flash drive.

Things to try, in order:


Rebuild the install drive using the same method you used before, but on a new drive.
Use the built-in recovery options (hold cmd R) to do the install. Then, upgrade to the latest version of OS X. By upgrading to the newer OSX, your recovery partition will be set to do a clean upgrade of El Capitan if you have to do it again.
If that doesn't work (say your recovery partition is trashed), there's the Internet Recovery option, which will actually reinstall the OS your mac shipped with.