Sean,
If you are wanting code related material then one good place is www.jadelearning.com as they have some PDF home study material that is very good. If you are simply looking to pass the electricians exam then I would suggest Mike Holts book " Exam Preparation"
Also on Mike Holt’s site you will find a bunch of online quizzes and so on to use with your code book to help get you ready my friend. And as always if you have any questions you need answered ( providing you talk to homosexuals as Mr. Shunk calls me…lo…better tell my wife quick…loll) then please feel free to call or e-mail and I will help you any way possible.
P.S. Never visit electriantalk’s website…it is moderated by idiots and they will lead you on the wrong path every time my friend…visit TRUSTED websites for knowledge.