The answer without a doubt on this problem is a sight called saracity.com
Check out all the tapes for practical instruction.There is a brand new one that take you through music,32 count,warm up cool down,stretching the whole shabang.All of her videos are geared for instructors to learn.It is the best,best,best.Im adicited to the tapes.So many to choose,so little damm money.Hope this helps.