I wrote my ND master about 20 years ago but eventually let it expire after reciprocating to MN where I presently hold my master license. (I didn't know I couldn't re-reciprocate to get the ND license back) Starting a week ago I'm frantically studying for my ND master license test on the 17th. Does anybody have any advice? Is there a Mike Holt book that would be useful? I'm simply going through the code book page by page and using the hardcover 2005 NEC Illustrated book which has some examples. Any insight would be appreciated. Thanks!