New Umpire

[U_of_I_Blue]

Ok, my regular partner for the rec league games i work informed me on sunday that he can't make it tomorrow night. I've got a high schooler (I'm in college) that is going to help me out. He plays baseball but has never been to the dark side. I know the rules and mechanics and such well, but the first time I'll get a chance to talk with him is 5:30 tomorrow night and the double header starts at 6:00.

In all of your opinions, what should I cover with him in the half hour we have for the pregame (either mechanics or rules info [played under FED rules]). I will mention also that he'll be doing the bases both games and I'll be doing the plate. Any and all responses would be appreciated!

All the Best,
Josh