Hоw dо I trаin my dоg tо соmе?

I use the techniques of positive feedback mechanism advocated by Ian Pavlov who was a Russian scientist. He used to ring a bell at a certain time and then give a meal to his dogs. The animals soon associated the sound of the ringing bell with food. When I command my pet to perform a certain pre-planned action, I usually follow up with a reward. The next time, it would be like he has been programmed to repeat the action because of expectation of a reward.