How to train is simply time and consistency. Take the time to train your kids first. Make a list of what all needs to be done as far as training goes and how you want it to go, then make sure your kids understand. For instance, you can incorporate hand signals in addition to verbal commands. Tell the dog to sit and hold your hand up at the same time. Eventually, you don't need to speak, just the hand signals will work. If this is something you're going for, make sure everyone knows what commands go with which hand signals from the beginning. Look up a half hitch, it'll keep the dog from pulling on a leash. Take the leash from the collar, run it down the back, wrap it around the stomach once and lead it back under itself (make sure not to catch anything important if your dog is a male.) It causes discomfort when they pull, they don't like the pressure on the tummy as the leash squeezes when they pull. Once you know how, show everyone else. Done early enough and done consistently, the dog won't pull even without the half hitch being used. Me, if I had the time, my voice and my commands would be the dogs leash. Hope everything goes smoothly with puppy training. Good luck!