Leash Training a Puppy is quite simple if you are prepared to stick to a few simple rules.
The first and most important rule is that you are in control. Your puppy will look to you for guidance and you will need to be consistent at all times.
Patience is the key to successful training. Always remember that your puppy is a blank canvas. He has not developed any knowledge or understanding of the world around him and he is looking to you for guidance.