I'm an elementary school counselor and for the last several years I've conducted an after-school golf club for girls/boys in 3rd-5th grade. This is not a competitive thing; simply trying to introduce them to the game so they can play with family & friends. We try to teach basics of putting & chipping here at school then we have 2 optional outings to local driving ranges/courses to work on full swings. I've also tried to incorporate the basics of etiquette/rules but I sometimes forget. What do you consider "essentials" of etiquette/rules that I MUST cover with young golfers?