How to make windows idiot proof?

  • Is there a way to make regular windows as safe as RT is right now?

Actually I know there is, but what steps should I take?

  • Separate user accounts with no admin privileges
  • solid antivirus (is avast still good?)
  • adblocker
  • scheduled maintenance (malware cleaning primarily)

This is where I draw a blank. Is there anything else to consider?