Some wonderful replies before me... I agree with all of them. I LOVE Burner's comment to teach him to "Grip it and Rip it" and maybe mix in just a little bit of basic motion, just a couple minutes at a crack so he doesn't get bored with it, to introduce the concept of great impact alignments, which include a flat left wrist and weight on the left side to strike down like my friend Jerry mentioned. Above all, have some fun!!!
__________________
I could be wrong. I have been before, and will be again.