Music can be good, but you can use voice as well, especially if you have a reassuring voice. However, a good guide, does have to be long. No question. If you go fast, people get confused. You have to cover EVERYTHING. for instance, the good guide i exibited says, "discharge yourself". Before i learnt about PCs, i would have said, "what the hell? why is he putting his finger in a plug????" You need to be nice and specific.