I'm coaching my kids with pretty good success so far. They seem to like tennis more and more and are playing better all the time. They also take lessons with a proffessional coach once/week. My 8 year old kid seems to be a fast learner and he's hitting his ground strokes very well already and he would like to start playing junior tournaments. Do you have any good serve-teaching tips/drills to recommend - I would be grateful for some tips - the serve seems to be the only thing he has problems with.