[Freddy]

In response to similar situations we face when doing Middle School games before the high school seasons start around here, I sought the insights of the members of this board and complied two simple, one-page guides for the scorekeeper and timekeeper to read through before the game. You could almost call these "Timekeeping and Scorekeeping for Dummies", but I wouldn't want to insult the youngsters or new adults who are, as you have stated, "in training" for these important tasks.
The NFHS has instructions that are available on their website. They are fine and good, but very detailed and somewhat a challenge for a newbie to go through right before a game. I also leave these NFHS pages with them to take home so they can study and get better for the next time.
I'll post what I came up with after this, that way others can add their constructive criticisms for the sake of improving the documents.