Virgil,
Get Jimmy a copy of "Electrical Wiring Residential" by Ray C. Mullin. It is expensive ($45 to $50) but is well written, plenty of excellent graphics. Mullin also wrote an industrial book too, I think. If it is as good as the residential book, probably worth a try.
After he's been at it awhile, get him his own copy of "Soares Book on Grounding."
I've always told my students that if they can make good connections and get the grounding right, they've gone a long way toward making a safe installation.
Wish him the best of luck from me.
Tom
