Electrical Code Book 2011...do not know which one to get...?

yes there have been a lot of changes. If you are just a homeowner and doing your own repairs then I would suggest just a electrical repair book based on the 2011 code but if you are a pro the standard NFPA 2011 code book would be the way to go. If you like a little more info and are willing to pay a little more the 2011 handbook would be the way to go.